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In which directory should an Oracle VM guest be placed In order to Import It as a virtual machine?
A customer decides to use 2 large servers to load balance a mix of large and small virtual machines. Each server has 64GB of RAM and 8 quad-core CPUs. There are 14 virtual machines, 6 of which use 12GB of virtual memory and 16 vCPU each, and the remaining 8 use 2GB and 4 vCPUs each. What two issues will the customer likely discover when one of the servers fails?
Not all of the virtual machines on the failed server will be able to restart on the remaining serverdue to lack of vCPUs.
Not all of the virtual machines on the failed server will be able to restart on the remaining serverdue to lack of memory.
Live migration will be unavailable until the second server is restored.
Not all of the virtual machines on the failed server will be able to restart on the remaining serverdue to lack of vNICs.
Not all of the virtual machines on the failed server will be able to restart on the remaining serverdue to lack of shared storage.
What two steps are required to ensure that virtual machines failover to a new server when their current server goes down?
Ensure that the Oracle VM Manager is always available by installing Oracle Clusterware.
Turn on High Availability Mode in the server pool.
Assign a virtual IP address to the server pool.
Turn on HA in all virtual machines that will be restarted.
Ensure all servers in the pool have identical CPU and memory.
Answer: A, B
In the question two steps are required so that you have to answer two here. Oracle Clusterware Ensure that your server is going to be restarted facility and it will provide you the failover feature for you as well. You have to turn on HA Mode in the server pool.
A virtual machine is needed once per week to run reports, but the rest of the time it Is idling. What method will unallocate resources such as CPU and memory, while keeping the virtual machine intact and ready for rapid re-deployment?
Pause the virtual machine when not in use, then unpause it when needed.
Suspend the virtual machine when not in use, then resume it when needed.
Live migrate the virtual machine to a spare server when not in use, then live migrate it back when needed.
Power off the virtual machine when not in use, then power it back up when needed.
Intel and AMD are adding functionality to their microprocessors to improve performance of virtualized environments. Which type of virtualization MOST benefits from these technologies?
Operating System Partitioning
Paravirtualized (PVM) -- A software interface similar but not identical to the underlying hardware is presented to the guest operating system. Paravirtualization provides hooks for guest instructions so that complicated tasks can be performed by the host instead of the virtual machine, where performance is worse. Paravirtualization requires that the guest kernel is ported to be made aware of the virtual environment.
A customer is setting up a 32-node Oracle VM server farm. What step will best help load balance the high number of I/O requests for new virtual machines and shared disks?
Increase the number of Oracle VM Manager instances.
Increase the number of servers with the Server Pool Master role.
Increase the number of servers with the Utility Server role.
Increase the number of servers with the Virtual Machine Server role.
Which two are true of an NFS repository when used with Oracle VM?
NFS repositories are excellent for storing guests' root file systems.
NFS is a more expensive option than iSCSI or SAN fabrics.
OCFS2 must be used as the filesystem format for volumes exposed through NFS.
NFS shares mounted directly in a guest require the DM-NFS driver to be installed on the guest.
NFS is supported for use in RAC only when mounted from the guest (not domO).
Answer: A, B
First of all here you have to select two options but answer shows one. A is ok.
A performance comparison of NFS and iSCSI for IP-Networked Storage showed that iSCSI is faster than NFS because iSCSI caches and updates meta-data asynchronously and transfers blocks rather than files. So the options B is right.
What is the effect of running a server pool restores?
When you restore a server pool, all the data stored In the Oracle VM Manager database isdeleted, and the data in the server pool master and virtual machine servers is used to restock the database.
When you restore a server pool, all servers are removed from the pool, and the data in the database is removed, restoring the server pool to its initial state.
When you restore a server pool, all the data stored in the server pool master will be deleted, and will be synchronized with the latest information from the Oracle VM Manager database. The server pool master is responsible for updating the individual Oracle VM servers' agent databases.
When you restore a server pool, a signal is sent out to each server in the pool, which responds swith the current state of all of the virtual machines it hosts. This data is used to restore the data in the Oracle VM database.
Identify the mechanism for combining one or more network interfaces to provide better throughput and failover capabilities.
Oracle 1Z0-590 Exam (Oracle VM 3.0 for x86 Essentials) Detailed Information
1Z0-590 Oracle VM 3.0 for x86 Essentials
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Oracle VM 3.0 for x86 Essentials certification
Oracle Certification ebook: Overview and profession Paths | 1Z0-590 Real Questions and VCE Practice Test
Oracle offers a multitude of hardware and software solutions designed to simplify and empower IT. perhaps most reliable established for its premier database application, the company also offers cloud solutions, servers, engineered programs, storage and greater. Oracle has more than 430,000 purchasers in a hundred seventy five international locations, about 138,000 personnel and exceeds $37.7 billion in profits.
through the years, Oracle has developed an intensive certification program. nowadays, it comprises six certification ranges that span nine distinct classes with greater than 200 individual credentials. for the reason that the depth and breadth of this software, and the number of Oracle valued clientele, it be no shock that Oracle certifications are incredibly well-liked.
Oracle certification software overview
Oracle's certification software is divided into these 9 basic categories:
Oracle enterprise administration
Oracle Java and Middleware
Oracle working techniques
additionally, Oracle's credentials are offered at six certification degrees:
Most Oracle certification checks are proctored, can charge $245, and comprise a mix of scored and unscored distinctive-alternative questions. Candidates may also take proctored exams at Pearson VUE, despite the fact some checks are offered at Oracle checking out centers in certain places. Some assessments, corresponding to Oracle Database 12c: SQL Fundamentals (1Z0-061) and Oracle Database 11g: SQL Fundamentals (1Z0-051), are additionally obtainable non-proctored and might be taken online. Non-proctored checks can charge $125. examine the Oracle school Certification website for details on certain exams.
Oracle applications and Cloud certifications
The Oracle purposes certification class offers greater than 60 particular person credentials throughout 13 products or product organizations, corresponding to Siebel, E-company Suite, Hyperion, JD Edwards EnterpriseOne and PeopleSoft. the majority of these certifications confer certified Implementation specialist for some specific application, with a lot of certified expert credentials also obtainable. The software certifications aim at people with skills in selling and implementing particular Oracle options.
Oracle's latest certification class is Oracle Cloud, which covers Java Cloud as well as a few Oracle Cloud certifications, including Oracle Database Cloud. Cloud certs fall into seven sub-categories:
Infrastructure as a carrier (IaaS)
Platform as a service (PaaS), together with records administration, application development, management Cloud and cell Cloud service
utility as a carrier (SaaS) – Oracle client event Cloud, including carrier, revenue, advertising and marketing and CPQ Cloud
software as a carrier – Oracle efficiency management Cloud, together with efficiency Reporting, enterprise Planning and Budgeting, monetary Consolidation and close, Profitability and price management Cloud
software as a services – Oracle commercial enterprise aid Planning Cloud, together with Financials, challenge Portfolio management, Procurement and chance management Cloud
application as a provider – Oracle Human Capital management Cloud, including team of workers Rewards, Payroll, ability management and international Human substances Cloud
application as a carrier – Oracle provide Chain administration Cloud, including Order administration, Product grasp information administration, Product Lifecycle management, Manufacturing, stock management, give Chain Planning and Logistics Cloud
These credentials appreciate individuals who installation functions, perform administration or convey client solutions in the cloud. Credentials normally encompass associate and Certification Implementation consultants, with one cell Developer credential offered plus an expert-stage Oracle Database Cloud Administrator.
Oracle Database certifications
Certifications in Oracle's Database category are geared toward individuals who advance or work with Oracle databases. There are three main classes: Database software construction, MySQL and Oracle Database.
be aware: Oracle Database 12c was redesigned for cloud computing (and is included in each the Cloud and Database certification classes). The existing edition is Oracle Database 12c R2, which consists of extra enhancements for in-reminiscence databases and multitenant architectures. MySQL 5.6 has been optimized for efficiency and storage, so it could actually handle greater statistics sets.
each time a big edition of either database is launched, Oracle updates its certifications assessments over time. If an exam is never obtainable for the newest free up, candidates can take a previous version of the examination and then an updated exam when it turns into accessible. although MySQL 5.6 certifications and assessments are nevertheless accessible for candidates supporting that version, the new MySQL 5.7 certification music can be greater appropriate for those just beginning on their MySQL certification journeys.
Oracle presently presents the Oracle Database Foundations certified Junior associate, Oracle licensed affiliate (OCA), Oracle certified skilled (OCP), Oracle certified grasp (OCM), Oracle licensed skilled (OCE) and specialist paths for Oracle Database 12c. furthermore, Oracle presents the OCA credential for Oracle Database 12c R2 and an upgrade direction for the OCP credential. as a result of a lot of these certifications are also ordinary inside the Oracle Certification application, we provide further exam details and hyperlinks in here sections.
other database certifications Oracle enterprise administration Certifications
The Oracle commercial enterprise manager Certification path offers candidates the chance to exhibit their expertise in application, middleware, database and storage management. The Oracle enterprise supervisor 12c certified Implementation expert exam (1Z0-457) certifies a candidate's advantage in physical, digital and cloud environments, in addition to design, setting up, implementation, reporting, and guide of Oracle commercial enterprise supervisor.
Oracle Database Foundations certified Junior affiliate
The Oracle Database groundwork licensed Junior associate credential objectives people who've participated within the Oracle Academy via a university or school software, computing device science and database academics, and people researching databases and desktop science. As a amateur-level credential, the licensed Junior associate is supposed for people with constrained arms-on event working on Oracle Database items. To earn this credential, candidates ought to move the Oracle Database Foundations (novice-degree exam) (1Z0-006).
Oracle licensed affiliate (OCA) – Oracle Database 12c Administrator
The OCA certification measures the daily operational administration database competencies of DBAs. Candidates should circulate a SQL exam and one more on Oracle Database administration. Candidates can select one of right here SQL assessments:
Oracle Database 12c SQL (1Z0-071)
Oracle Database 12c: SQL Fundamentals (1Z0-061) observe: This examination should be retired on November 30, 2019.
Candidates must also flow the Oracle Database 12c: installing and Administration (1Z0-062) examination.
Oracle certified affiliate – Oracle Database 12cR2 Administrator
To earn the Oracle Database 12cR2 OCA credential, candidates need to first earn both the Oracle Database SQL licensed associate, Oracle Database 11g Administrator certified associate, or the Oracle Database 12c Administrator certified associate. moreover, candidates are required to circulate the Oracle Database 12cR2 Administration examination (1Z0-072).
Oracle licensed expert (OCP) – Oracle Database 12c Administrator
The OCP certification covers extra superior database skills. You should have the OCA Database 12c Administrator certification, complete the necessary training, post a route submission kind and move the Oracle Database 12c: superior Administration (1Z0-063) exam.
experts who possess both the Oracle Database 11g Administrator licensed skilled or Oracle Database 12c Administrator licensed skilled credential may additionally upgrade to the Oracle Database 12cR2 Administration licensed expert credential by way of passing the Oracle DBA upgrade examination (1Z0-074).
Oracle licensed master (OCM) – Oracle Database 12c Administrator
To achieve OCM Database 12c Administrator certification, you have to have the OCP Database 12c Administrator certification, finished two advanced lessons, and move the Oracle Database 12c certified grasp exam (12cOCM), complete the path submission kind, and put up the achievement equipment request.
Oracle additionally offers the Oracle Database 12c optimum Availability certified master certification, which requires three separate credentials, together with the Oracle Database 12c Administrator certified master, Oracle certified professional, Oracle Database 12c-RAC and Grid Infrastructure Administration, and Oracle licensed skilled, Oracle Database 12c – information protect Administration.
Oracle licensed skilled (OCE) – Oracle Database 12c
The OCE Database 12c certifications include highest Availability, information protect Administrator, RAC and Grid Infrastructure Administrator, and efficiency management and Tuning credentials. All these certifications involve prerequisite certifications. efficiency management and Tuning takes the OSP Database 12c as a prerequisite and the information protect Administrator certification requires the OCP Database 12c credential. The RAC and Grid Infrastructure Administrator offers candidates essentially the most flexibility, allowing candidates to choose between the OCP Database 11g, OCP Databases 12c, Oracle licensed professional – actual application Clusters 11g and Grid Infrastructure Administration.
once the prerequisite credentials are earned, candidates can then achieve data shield Administrator, RAC and Grid Infrastructure Administrator or performance management and Tuning through passing one examination. achieving OCP 12c plus the RAC and Grid Infrastructure Administration and records shield Administration certifications earns the optimum Availability credential.
Oracle Database certified Implementation expert
Oracle also offers three certified Implementation professional credentials: the Oracle precise software Clusters 12c, Oracle Database performance and Tuning 2015, and Oracle Database 12c. specialist credentials target individuals with a historical past in promoting and enforcing Oracle options. every of these credentials requires candidates to circulate a single examination to earn the designation.
Oracle Industries certifications
Oracle Industries is yet another extensive class, with more than 25 individual certifications focused on Oracle application for the building and engineering, communications, fitness sciences, insurance, tax and utilities industries. All these certifications appreciate licensed Implementation experts for the a lot of Oracle industry items, which capacity they establish people knowledgeable in implementing and promoting business-certain Oracle application.
Oracle Java and Middleware Certifications
The Java and Middleware certifications span a couple of subcategories, akin to enterprise Intelligence, utility Server, Cloud application, statistics Integration, id administration, cellular, Java, Oracle Fusion Middleware development equipment and more. Java and Middleware credentials signify all stages of the Oracle Certification application – affiliate, expert and so forth – and include Java Developer, Java Programmer, equipment Administrator, Architect and Implementation specialist.
The incredibly established Java category has certifications for Java SE (regular edition), and Java EE (business version) and web features. a few Java certifications that require a previous certification settle for either the corresponding sun or Oracle credential.
Oracle working programs certifications
The Oracle working methods certifications include Linux and Solaris. These certifications are geared towards directors and implementation consultants.
The Linux 6 certifications encompass OCA and OCP Linux 6 system Administrator certifications, as well as an Oracle Linux certified Implementation professional certification. The Linux 6 specialist is geared to partners but is open to all candidates. each the Linux OCA and expert credentials require a single exam. To achieve the OCP, candidates need to first earn both the OCA Linux five or six system Administrator or OCA Linux Administrator (now retired) credential, plus circulate an examination.
The Solaris eleven certifications encompass the OCA and OCP gadget Administrator certifications plus an Oracle Solaris 11 setting up and Configuration certified Implementation expert certification. The OCA and OCP Solaris 11 device Administrator certifications determine Oracle Solaris 11 administrators who've a primary skills of and base-level expertise with the UNIX operating equipment, instructions, and utilities. As indicated by using its name, the Implementation professional cert identifies intermediate-stage implementation team contributors who install and configure Oracle Solaris eleven.
Oracle techniques certifications
Oracle systems certifications include Engineered methods (massive information appliance, Exadata, Exalogic Elastic Cloud, Exalytics, and personal Cloud appliance), Servers (Fujitsu and SPARC) and Storage (Oracle ZFS, Pillar Axiom, Tape Storage, Flash Storage gadget). each one of these certifications goal at people who sell and implement one of the certain options. The Exadata certification subcategory also comprises Oracle Exadata X3, X4 and X5 skilled Administrator certifications for individuals who administer, configure, patch, and monitor the Oracle Exadata Database computing device platform.
Oracle Virtualization certifications
The Virtualization certifications cowl Oracle virtual laptop (VM) Server for X86. This credential is in keeping with Oracle VM 3.0 for X86, and recognizes people who sell and implement Oracle VM options.
The Oracle VM three.0 for x86 certified Implementation professional Certification intention at intermediate-level crew members informed in installation OVM 3.0 Server and OVM 3.0 supervisor add-ons, discovering OVM Servers, configuring community and storage repositories and extra.
related jobs and careers
The sheer breadth and depth of Oracle's certification application creates abundant alternatives for experts who wish to work with Oracle applied sciences, or who already do and wish their expertise identified and validated. besides the fact that children there are many specific Oracle items wherein to specialize in various capacities, the main job roles encompass directors, architects, programmers/developers and implementation specialists.
every enterprise that runs Oracle Database, Oracle Cloud, or Oracle Linux or Solaris wants certified directors to install, keep, monitor and troubleshoot these options. These same organizations also need architects to plot and design options that meet company needs and are acceptable for the certain environments by which they may be deployed, indicating that the alternatives for profession advancement in Oracle technologies are plentiful.
Job listings and hiring facts point out that programmers and developers proceed to be extremely sought-after within the IT world. Programming and building skills are one of the most sought-after by using hiring managers in 2019, and database administration is rarely a ways at the back of. a quick search on indeed outcomes in basically 12,000 hits for "Oracle developer," which is a pretty good indication of each need and opportunity. now not simplest do developers create and adjust Oracle utility, they regularly have to know how to design utility from the ground up, equipment products, import records, write scripts and develop reports.
And, of course, Oracle and its partners will at all times need implementation experts to promote and install the enterprise's solutions. This role is usually answerable for tasks that have to be successfully achieved to get an answer up and working in a shopper's ambiance, from creating a venture plan and schedule, to configuring and customizing a device to in shape customer necessities.
Oracle practicing and substances
it be no longer extraordinary that Oracle has an intensive library of exam preparation substances. determine the Oracle college web site (education.oracle.com) for fingers-on teacher-led practicing, virtual classes, training on demand, examination coaching seminars, apply tests and other practising elements.
A candidate's surest guess, youngsters, is to first choose a certification direction and then comply with the hyperlinks on the Oracle website to the required examination(s). If training is suggested or additional supplies are available for a specific exam, Oracle lists them on the exam page.
one more splendid useful resource is the Oracle studying Paths webpage, which offers a lengthy listing of Oracle product-related job roles and their counseled lessons.
Ed TittelEd is a 30-yr-plus veteran of the computing trade. He has worked as a programmer, technical supervisor, classroom teacher, community consultant and a technical evangelist for groups that consist of Burroughs, Schlumberger, Novell, IBM/Tivoli and NetQoS. He has written for numerous publications, including Tom's IT professional, and is the author of more than a hundred and forty computing books on assistance protection, web markup languages and building tools, and home windows working programs.
Earl FollisEarl is also a 30-year veteran of the desktop trade, who worked in IT working towards, advertising and marketing, technical evangelism, and market evaluation within the areas of networking and systems expertise and administration. Ed and Earl met in the late 1980s when Ed hired Earl as a trainer at an Austin-enviornment networking company this is now part of HP. both of them have written numerous books together on NetWare, home windows Server and different themes. Earl is also an everyday creator for the computing device exchange press with many e-books, white papers and articles to his credit.
Roxen WebServer 2.2 | 1Z0-590 Real Questions and VCE Practice Test
The Roxen WebServer, from the Swedish business Roxen internet utility, is a manageable option for people that discover Apache inappropriate for his or her wants. despite the fact Apache dominates the internet net server market, it has some vulnerable facets: it lacks a built-in SQL database backend, flexible administration tools and simple SSL certificate management. All of those elements may also be discovered, however, within the Roxen WebServer. basically, Roxen contains so many additional points that it appears extra like an application server than an ordinary net server.
best of all is that the Roxen WebServer is open-supply software lined with the aid of the GPL license, and it's free for each very own and business applications. moreover, Roxen cyber web utility presents service-help contracts, working towards and consulting functions for those that want commercial suggestions.
Getting all started
Roxen WebServer 2.2 is attainable as a free down load for a lot of platforms: FreeBSD four.0, HPUX 11, Linux (libc6), Solaris 7 SPARC, Solaris 7 x86, home windows NT 4.0, Mac OS X and Darwin (PowerPC version). source code is additionally obtainable if you happen to choose to bring together it your self. firstly, you should be aware that two versions of the Roxen WebServer can be found for down load. One has LZW algorithm help it's in a position to encode and decode the GIF and TIFF image formats, and the other edition doesn't. (The LZW algorithm is patented by using Unisys in the US and Canada but not in Europe). regardless of LZW help, each Roxen versions encompass 128-bit encryption algorithms, and it will also be imported legally from Sweden because, starting July 1, 2001, the export of sturdy cryptography from Sweden is allowed to all countries presently related to the internet. I established the Roxen WebServer on purple Hat 6.2, my favorite Linux distribution for servers.
Roxen comes in one massive file as a self-extracting shell script, and it installs straight away and simply. The installer asks for primary suggestions, such because the installing listing, the server identify and the password for administrative interface. It also searches for the Java 2 SDK setting up and Informix, Oracle or Sybase servers. basically, Roxen WebServer consists of three leading materials, the web server itself, the Pike scripting language interpreter and a wrapped MySQL server. which you can birth Roxen manually (the use of the birth script inner the installing listing). if you wish to beginning it automatically right through equipment bootup, then you definately'll should reproduction the init.d_roxen script from'/roxen/server/tools (in Roxen's installation listing) to /and so forth/rc.d/init.d. do not forget to make the applicable symbolic hyperlinks to runlevel directories. We are actually able to play with the Roxen net interface.
internet Administration Interface
Roxen's main potential over Apache (and others) is it elements an integrated administration interface it's tightly integrated into net server itself. This interface can be accessed from any internet browser. As you can see from the figures, the administrative interface is basically miraculous--powerful and neatly designed. i want to look whatever equivalent purchasable for Apache. even so, using the executive interface is the most effective approach to handle your server. The complete configuration is kept in textual content data, but it surely is tough to edit them by hand as a result of they're encoded by means of XML. this is one reason why Apache administrators may additionally discover it tough to manage Roxen from the web browser.
if you want use this interface you need to go browsing the usage of the administrator's username and password (defined all through installation) on http://yourserver:13123--the default TCP port for communication with Roxen WebServer--you might be capable of trade it later. bear in mind that this connection is never secured in any way. Administrative interfaces should use the SSL secure connection (HTTPS). although, you'll deserve to create certificates and configure it yourself.
The net interface is break up into many tabs, every masking a particular subset of server administration features. There are five main tabs for administrative tasks:
Admin - administrative settings like passwords and login names,
sites - managing virtual sites (here you can configure modules for each virtual web site),
Globals - world settings for Roxen WebServer,
projects - configuring a simple webserver projects,
DBs - interior MySQL database administration and
medical doctors - Roxen documentation
each and every of these tabs splits into just a few different sections which are logically categorised. Most configuration settings include links to acceptable assist subject matters. it's first rate to bear in mind that, through default, the Roxen WebServer sends all of its pages encoded in UTF 8, a typical Unicode encoding that makes the pages effortless to switch to the japanese, chinese, Vietnamese or Korean languages. Of route, which you can change the environment to the ISO encoding general.
step one in configuring a brand new server is to create a check digital website. bear in mind for you to create many administrative clients and give them confined privileges for administering chosen digital sites or the entire Roxen WebServer itself.
Modules, Modules, Modules
The Roxen WebServer is particularly modular, much greater so than Apache. in fact, Roxen sometimes needs a few modules to do the least difficult project. Many preconfigured modules are protected that you can allow, disable and setup from the executive interface. Roxen modules can also be delivered on the fly, as adversarial to Apache modules. it's also tons simpler to write down your own module for Roxen than it is for Apache. The module creator can concentrate on the genuine services in her module since the Roxen WebServer provides frameworks such as the user interface and that i/O operations. This approach also ensures the equal user interface, and every virtual website can use its personal subset of modules. Roxen modules can be written in Pike or Java.
The Roxen WebServer comprises a widely wide-spread database API (obtainable throughout the Pike interpreter), which is used to hook up with a different SQL databases. Pike includes native drivers for Oracle 7/8, (you will deserve to deploy OCI, Oracle client Libraries though), Sybase, Informix, MySQL, Postgres and ODBC records sources. that you could use the executive interface to verify database connections or to run SQL queries, to browse tables or to operate every other administrative movements for the database engine.
extra enjoyable is that the Roxen WebServer includes a wrapped MySQL server and makes use of it for storing the gadget configuration, usernames, passwords, pictures and assist documents. This MySQL sever can also be administered completely during the Roxen internet interface as neatly. Roxen additionally contains (accessible through the internet interface) for backing up and restoring its interior databases. The interior net server information can be replicated with a shared MySQL database, a brilliant idea since it permits many Roxen servers to share the identical configuration facts, all saved in a single MySQL database.
Scripting with Roxen
There are several methods to run scripts in Roxen, and it helps such requirements as CGI, FastCGI and SSI. furthermore, a built-in macro language RXML(Roxen Macro Language) is also offered. Most ordinary language scripts can cooperate with Roxen, despite the fact, most of them only as CGI scripts. Of path, essentially the most critical component for most internet developers is the question of php assist. In reply, Roxen lacks native php help, but there is an experimental module for embedded php. The simplest formally supported mode of operating Hypertext Preprocessor with Roxen is the old-usual manner, working Hypertext Preprocessor scripts as CGI scripts.
Let's circulate on to Perl. The blanketed Perl module offers help for each Perl scripts and Perl tags internal HTML code. In each cases, the exact Perl code is finished in a subprocess and not frequently Roxen process. The module will capture requests to files whose path ends with any of the suffixes indicated by using the extensions environment in the Perl module configuration. The defaults are .perl and .pl. Perl tags, or processing directions, will be available if the module environment enable Perl tag is determined to yes. This ability that RXML (see under) pages can use Perl code that feels like:
The Perl module also optionally offers a container for embedding Perl code at once inner static HTML.
Roxen additionally contains its own scripting extension RXML (Roxen Macro Language); it is known as a scripting language, however it's not a full featured language. RXML readily provides a brand new subset of tags to widespread HTML tags, and it's comparable to XML if you examine its tags and entity-primarily based syntax. The basically usable RXML feature is that it will also be prolonged with new tags, by writing new modules or growing wrapper tags.
RXML is fundamental enough to be used by way of net designers that don't know programming. The average example for RXML vigour is the If tag, which makes it possible to create dynamic pages in keeping with conditions. RXML makes it easy to have page optimization for distinct internet browsers and display resolutions or to limit access to pages that can be considered only through authenticated clients.
The Roxen WebServer includes a Java servlet bridge module, which is its interface to Java servlets. To have Java help loaded, the Roxen installer ought to discover a Java 2.0 SDK-compliant digital laptop during setting up. sadly I've had difficulty the use of my favorite Java VM, IBM's Java enhance kit for Linux 1.3.0, with Roxen. i was unable to configure the Java servlet bridge as a result of compilation errors. In conception, a Java servlet is installed via including a replica of the Java servlet bridge module. Java modules are only .class info or .jar info inside the normal module directories and behave within the equal way as do Pike modules. Roxen documentation includes a detailed guide for surroundings this all up and examples of how to do it.
The Roxen WebServer comes with its own, accepted scripting language, Pike. The Pike language is an interpreted, object-oriented language that feels like simplified C/C++. The Pike 7.2 interpreter is blanketed with the Roxen WebServer 2.2, and it's also dispensed beneath the GPL. What's greater, Roxen WebServer itself is written in Pike. The Pike interpreter includes all the capabilities and libraries that are indispensable to access all of Roxen's capabilities (i.e., the database API). that you may additionally use Pike internal web pages as tags or standalone scripts. here is an example Pike script for creating a database with Pike; it resembles the Perl DBI.
void create_new_database(string check) combined error; object db = Sql.sql("mysql://admin:email@example.com/"); error = seize db->create_db("test"); ; if(error) werror("Error: "+db->error()+"\n"); return;
Bells and Whistles
Roxen comes with many easy elements intended for administrators and developers. the primary of them is a constructed-in update device on the way to periodically contact replace servers at Roxen internet utility over the cyber web. i'm not very excited with the aid of that function, and that i do not want to allow computerized (i.e., that's, out of your manage) updates of any software on my construction servers. i will do this manually, thank you.
Two unique points are included which are intended to make certain net server availability. ABS is the anti-block equipment that restarts the internet server in case it locks up and would not respond in a reasonable amount of time (you can precisely outline that "reasonably-priced time"). Auto Restart restarts Roxen on a particular agenda to free reminiscence or file supplies that Roxen is otherwise unable to free.
one other effective characteristic is the records cache it is used to cache static pages that are often accessed. The RXML parser figures out whether a web page is static or not through letting each tag inform even if it may also be cached or no longer. The "throttling" feature is additionally constructive. it is a module that interprets a special tag subset internal HTML code, making it viable to restrict the bandwidth given to every web site and even to each request.
There are also 5 on-the-fly graphic era modules that I truly favored. First is GButton, which provides a tag it really is used to attract graphical buttons. The 2nd is photograph textual content, and it makes use of the FreeType library to generate dependent rendered graphical textual content. Now you could use your favourite fonts, and all graphical net browsers will screen them in the same means. The third module is the graphic converter, which gives a tag that may also be used to convert photos from one layout to an extra. Tab record is the fourth module, and it is a tag used to attract tab lists. The ultimate module, but by no means the least, is the company snap shots module (featuring the diagram tag) that makes it possible for Roxen to construct different sorts of diagrams on the fly.
apart from all of this, Roxen comprises integrated SSL configuration and certificates management. that you could generate certificates requests or self-signed SSL certificates that can be used as root certificates for producing client's certificates. All operations will also be carried out from the executive web interface.
One last issue: Roxen includes awesome documentation this is, again, attainable throughout the net interface. It is split into three ingredients, each is written from an additional factor of view--administrator, programmer and net dressmaker.
manufacturer: Roxen internet SoftwareE-Mail: firstname.lastname@example.orgURL: www.roxen.comPrice: GPL. Free for commercial and private utilization. industrial aid and practicing are available.
dazzling administrative interface
convenient virtual sites deployment
MySQL database backend integrated with webserver
Many constructed-in extensions like graphic textual content rendering
Replication of internet server facts to a shared MySQL database
terrible Hypertext Preprocessor aid
Unencrypted administrative connections
No cluster or load balancing facets
No option for administrative net interface
Pawel Leszek is a contract author and consultant that specialize in Linux, Mac OS X/Darwin and groupware solutions. He has used Linux on the grounds that 1995.
inner Oracle VM VirtualBox | 1Z0-590 Real Questions and VCE Practice Test
This chapter explains how Oracle VM VirtualBox works and offers examples of standard configurations.
This chapter is from the publication ?
Oracle VM VirtualBox ("VirtualBox") is a high-performance, go-platform virtualization engine to be used on computers running Microsoft home windows, probably the most prevalent Linux distributions, Oracle Solaris, or MacOS. Designed for use on Intel and AMD x86 techniques, Oracle VM VirtualBox may also be deployed on desktop or server hardware. As a hosted hypervisor, it extends the existing operating system installed on the hardware rather than changing it.
VirtualBox includes a hypervisor for the host platform, an application programming interface (API) and application building equipment (SDK) for managing guest digital machines, a command-line tool for managing visitors locally, a web service for faraway administration of guests, a wizard-vogue graphical tool to manipulate visitors, a graphical console for exhibiting guest purposes on the native host, and a constructed-in far flung computer Protocol (RDP) server that provides finished entry to a visitor from a faraway customer.
As proven in determine 5.1, VirtualBox can run on a wide selection of host structures. Binaries can be found for these operating methods, most of them in 32-bit and sixty four-bit models:
Solaris 10 5/08 and newer, and OpenSolaris 2008.05 and more moderen
Oracle enterprise Linux (32-bit)
Microsoft windows (XP, Vista, 7) and windows Server 2003 and 2008
Mac OS X 10.5 and newer (Intel handiest)
Linux distributions, including SuSE 9 and more moderen, Ubuntu, pink Hat enterprise Linux four and newer, and others Figure 5.1
figure 5.1 platforms Supported through Oracle VM VirtualBox
There are no selected barriers on the visitor operating system, however supported guests consist of the entire host working programs plus FreeBSD, OS/2, and legacy home windows types (NT, home windows 98, windows 3.1, DOS). No particular hardware is required to run VirtualBox, apart from an Intel x86-compatible device and enough reminiscence to run the guests. If the device has Intel VT-x or AMD-V hardware virtualization extensions and they are enabled in the BIOS, VirtualBox can take competencies of those objects and supply even more suitable visitor operational behavior.
The modular design of VirtualBox gives a consistent set of aspects throughout a big range of host structures. As a outcome, a digital machine or disk image created on one host can be loaded and run on any supported host. moreover, a user or administrator who's well-known with managing guest virtual machines on one classification of host can manage guests on any of the other supported programs.
advanced computer points such as Seamless Mode and Shared Clipboard provide clients a uniquely intimate journey when interacting with in the community working guests. The developed-in remote laptop Protocol (RDP) server makes VirtualBox optimal for consolidating and hosting faraway laptop methods. recent improvements in disk and network performance, peculiarly when combined with the advanced useful resource management facets obtainable in Oracle Solaris, make VirtualBox a superb alternative for hosting server workloads.
This chapter assumes widely wide-spread capabilities of laptop hardware. It additionally assumes using VirtualBox edition 3.1.four.
Virtualizing an working equipment on an x86 processor is a tricky assignment, especially without Intel VT-x or AMD-V hardware facets. before describing how VirtualBox works, a quick review of the x86 storage insurance policy mannequin is integral.
The Intel x86 structure defines 4 stages of storage protection called rings, which can be numbered from 0 (essentially the most privileged) to three (the least privileged). These rings are used through working programs to offer protection to crucial system memory from programming error in much less-privileged user purposes. of those 4 tiers, ring 0 is special in that it allows software to entry true processor resources such as registers, web page tables, and service interrupts. Most working methods execute person courses in ring 3 and their kernel features in ring 0.
VirtualBox runs a single method on the host operating gadget for each virtual guest. all of the visitor consumer code is run natively in ring three, just because it can be if it have been running within the host. because of this, consumer code will operate at native pace when running in a visitor virtual laptop.
To give protection to the host towards disasters within the visitor, the guest kernel code isn't allowed to run in ring 0 however instead runs in ring 1 if there is no hardware virtualization assist, or in a VT-x ring 0 context if such assist is available. This presents a problem since the visitor may be executing guidelines that are permitted best in ring 0 whereas other directions behave in a different way when run in ring 1. To hold correct operation of the visitor kernel, the VirtualBox digital computer computer screen (VMM) scans the ring 1 code and either replaces the complicated code paths with direct hypervisor calls or executes them in a secure emulator.
In some cases, the VMM might also not be in a position to investigate exactly what the relocated ring 1 guest code is doing. In these circumstances, VirtualBox makes use of a QEMU emulator to achieve the equal well-known desires. Examples encompass working BIOS code, real-mode operations early all the way through visitor booting when the guest disables interrupts, or when an guideline is regular to trigger a trap that may require emulation.
as a result of this emulation is gradual in comparison to the direct execution of visitor code, the VMM contains a code scanner this is pleasing for each supported guest. As outlined previous, this scanner will determine code paths and replace them with direct calls into the hypervisor for a more relevant and productive implementation of the operation. furthermore, each time a guest fault occurs, the VMM will analyze the cause of the fault to see if the offending code movement can get replaced via a much less expensive method in the future. resulting from this strategy, VirtualBox performs enhanced than a typical emulator or code recompiler. it might additionally run a fully virtualized guest at virtually the same velocity as one that is assisted by using Intel VT-x or AMD-V elements.
Some working programs may run equipment drivers in ring 1, which may cause a conflict with the relocated guest kernel code. These styles of visitors will require hardware virtualization.
5.1.1 Oracle VM VirtualBox architecture
VirtualBox makes use of a layered structure which includes a collection of kernel modules for operating virtual machines, an API for managing the guests, and a group of user programs and capabilities. on the core is the hypervisor, applied as a ring 0 (privileged) kernel service. figure 5.2 suggests the relationships between all of those add-ons. The kernel carrier contains a tool driver named vboxsrv, which is accountable for projects akin to allocating physical reminiscence for the visitor digital computer, and several loadable hypervisor modules for issues like saving and restoring the visitor procedure context when a bunch interrupt occurs, turning manage over to the visitor OS to start execution, and deciding when VT-x or AMD-V pursuits need to be dealt with.
The hypervisor doesn't get worried with the details of the visitor operating equipment scheduling. in its place, these tasks are handled absolutely by way of the visitor all over its execution. The whole visitor is run as a single procedure on the host equipment and should run best when scheduled through the host. in the event that they are existing, an administrator can use host resource controls corresponding to scheduling classes and CPU caps or reservations to provide very predictable execution of the visitor computer.
extra equipment drivers can be existing to allow the visitor computer access to other host materials corresponding to disks, community controllers, and audio and USB devices. really, the hypervisor basically does little work. quite, lots of the interesting work in running the guest machine is done within the guest process. for this reason the host's aid controls and scheduling methods may also be used to manage the visitor computer behavior.
in addition to the kernel modules, a few strategies on the host are used to help running guests. All of these techniques are started instantly when mandatory.
VBoxSVC is the VirtualBox carrier technique. It continues tune of all virtual machines which are working on the host. it is began immediately when the primary guest boots.
vboxzoneacess is a daemon exciting to Solaris that permits the VirtualBox device to be accessed from an Oracle Solaris Container.
VBoxXPCOMIPCD is the XPCOM technique used on non-home windows hosts for interprocess conversation between guests and the management functions. On windows hosts, the native COM capabilities are used.
VirtualBox is the manner that basically runs the guest digital machine when begun. One of those tactics exists for every guest it is working on the host. If host resource limits are preferred for the visitor, this procedure enforces these controls. 5.1.2 Interacting with Oracle VM VirtualBox
There are two basic strategies for a person to engage with VirtualBox: a simple graphical user interface (GUI) and a very comprehensive and special command-line interface (CLI). The GUI permits the user to create and manage visitor virtual machines as well as set many of the regular configuration alternate options. When a visitor computing device is started from this consumer interface, a graphical console window opens on the host that allows for the consumer to engage with the guest as if it were operating on real hardware. To delivery the graphical interface, category the command VirtualBox at any shell immediate. On Oracle Solaris, this command is found in /usr/bin and is obtainable to all clients.
The CLI is the VBoxManage command. VBoxManage has many subcommands and alternatives, some of that are discussed in here sections. To get a listing of all VBoxManage options, simply class VBoxManage at any shell on the spot. without any command arguments, VBoxManage will respond with a listing of all legitimate alternate options. When a VBoxManage command efficiently completes, it'll print out a banner comparable to the one in here example:
% VBoxManage record vms solar VirtualBox Command Line management Interface version 3.1.4 (C) 2005-2010 solar Microsystems, Inc. All rights reserved. "home windows XP" 4ec5efdc-fa76-49bb-8562-7c2a0bac8282
If the banner fails to print, an error came about whereas processing the command. always, diagnostic tips might be displayed as an alternative of the banner. If the banner is the simplest output, the command effectively completed. within the examples in the remainder of this chapter, the banner output has been ignored for the sake of brevity.
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Oracle VM 3.0 for x86 Essentials test
How to install Oracle VirtualBox | killexams.com 1Z0-590 Real Questions and VCE Practice Test
On my machine, Windows 10 is a virtual machine running under VirtualBox which is running under OS X “El Capitan”! So, we have a system as in the above diagram. That’s how robust VirtualBox is. Yes, I know other VM solutions can do this, but are they free?
I’ve become a big fan of Oracle VirtualBox particularly on OS X. Its low overhead and openness and, as I noted at the beginning, its robustness and versatility, make it a great platform for both test and production systems. Oracle VirtualBox gets a Gearhead rating of 5 out of 5.
VirtualBox: A cheat sheet | killexams.com 1Z0-590 Real Questions and VCE Practice Test
The VirtualBox GUI and command line tool makes it easier to work with virtual machines and appliances. Find out how to get and use this open source virtualization tool.
VirtualBox has been enabling open source enthusiasts, IT admins, and tech writers to host various operating systems on a host machine for years. Anyone that wants to test out new platforms, develop, or manage virtual machine (VM) servers can turn to this free, open source tool to strengthen their skills or expand their company's services.
This smart person's guide is a quick way to get up to speed on VirtualBox. We'll update this resource periodically when news and updates about VirtualBox are released.
SEE: All of TechRepublic's smart person's guides
What is VirtualBox? VirtualBox is a general-purpose virtualization tool for x86 and x86-64 hardware, targeted at server, desktop, and embedded use, that allows users and administrators to easily run multiple guest operating systems on a single host.
Why does VirtualBox matter? VirtualBox makes it possible for administrators and developers to quickly spin up full-blown operating systems without having to use dedicated hardware, thereby saving precious budget dollars on hardware.
Who does VirtualBox affect? VirtualBox affects anyone who needs to easily deploy a VM to be used as a server, desktop, testing environment, or teaching tool.
When is VirtualBox available? VirtualBox was first released January 15, 2007 and has been in constant development since. The platform's 5.1.28 iteration was released September 14, 2017.
How can I get VirtualBox? VirtualBox can be downloaded and installed on Linux, Windows, or macOS. On the Linux platform, VirtualBox can be found within the standard repositories, so installation can be done using your distribution's package manager.
SEE: Virtualization policy (Tech Pro Research)
virtualbox_hero.jpg What is VirtualBox?
VirtualBox is a GUI and command line tool that makes it possible to deploy servers, desktops, and embedded operating systems as VMs. A single VirtualBox host can deploy as many guest VMs as the host hardware can handle.
VirtualBox consists of hosts and guests. The host houses the VirtualBox software that can then deploy the guests. A guest is any supported operating system running as a VM. A VirtualBox host can be run on Linux, Windows, or macOS, whereas a VirtualBox guest can consist of any Linux distribution, Solaris, macOS, BSD, IBM OS/2, or Windows. In order to run macOS or Windows as a VM, you must have a licensed copy of the operating system in question.
The host can run as many guests as the hardware will support, while still leaving enough resources for the host to operate. Each individual guest can be started, stopped, and paused from either the GUI or the command line and can function on a network as if it were running on its own hardware.
VirtualBox can be run from either a user-friendly GUI or from the command line. Thanks to the command line option, VMs can be deployed on a server with or without a GUI, making the software highly flexible.
SEE: Riding the DevOps revolution (free PDF) (TechRepublic)
When using VirtualBox as the host platform, administrators can deploy hosts from ISO images or from VDI/VMDK/VHD images. If deploying guests from an ISO image, the guest operating system is installed in normal fashion—only as a VM. With VDI/VMDK/VHD images, it is possible to quickly deploy a virtual appliance without having to go through the steps of installing the operating system as the guest. A great place to find virtual appliances for VirtualBox is TurnKey Linux.
To make VirtualBox even more appealing, the VirtualBox Extension Pack is available, and it adds support for USB 2.0 and USB 3.0 devices, VirtualBox RDP, disk encryption, NVMe and PXE boot for Intel cards. There is also the Guest Additions, which expands the VirtualBox feature set to include mouse pointer integration, shared folders (between guest and host), improved video support, seamless windows, generic host/guest communication channels, time synchronization, shared clipboard, and automated logons.
Why does VirtualBox matter?
VMs gives administrators an easy route for testing and developing platforms. VirtualBox makes this not only easy, but affordable. Since VirtualBox is free, anyone can use this software to extend the capabilities and offerings for their business. With businesses growing more and more dependent upon Linux, it will be crucial for administrators to be capable of working with the platform; VirtualBox makes it easy to deploy Linux guests without having to use expensive hardware. With VirtualBox admins can even emulate a network to either improve their skills or test deployments.
VirtualBox makes it possible for anyone from end users to enterprise IT staff to work with virtualization. The GUI tool requires very little in the way of a learning curve, so it won't get in the way of learning about the guest platform. Considering that container technology has risen to the forefront of IT, VirtualBox makes it incredibly easy for admins to test tools such as Docker, especially thanks to distributions, including boot2docker.
Who does VirtualBox affect?
VirtualBox affects administrators and end users, as well as people that make use of the technology brought about by VMs. Anyone who wants to test out a different operating system (such as Linux) will find VirtualBox an easy route to success.
Developers are also affected by VirtualBox, as it enables them to develop on a variety of platforms and create virtual networks to further test their software.
Businesses are on the receiving end of VirtualBox benefits. Although most people assume VMware is the only in-house virtualization solution capable of business-level VM deployment, VirtualBox is quite adept at serving on such a level.
SEE: What is DevOps? An executive guide to agile development and IT operations (ZDNet)
For commercial use, Oracle offers Enterprise licenses at $50.00 USD/per user. The Enterprise license includes better Extension Pack management. Although VirtualBox is released under the GPL, the Extension Pack is proprietary. The Extension Pack can be used, free of charge, for personal use, but it requires a license for commercial usage.
When is VirtualBox available?
The first iteration of VirtualBox was released on January 15, 2007, by Innotek GmbH (a software company located in Stuttgart, Germany) under a proprietary software license. Innotek did make one version of VirtualBox available free of cost for personal evaluation. In 2007, under the guidance of LiSoG (Die Linux Solution Group), Innotek released an open source edition of VirtualBox (licensed under GPL version 2).
In February 2008, Sun Microsystems acquired Innotek. In January 2010, Oracle Corporation acquired Sun and rebranded VirtualBox as Oracle VM VirtualBox.
Currently, VirtualBox is in its 5th iteration, and development of the product is steady.
How can I get VirtualBox?
Anyone can download and install VirtualBox. Linux users will find VirtualBox in their distributions' default repositories, so the software can be installed via the operating system's package manager. For Windows and macOS users, you must use the official installer files: Windows or macOS. Once installed, VirtualBox is ready to deploy VMs from your downloaded Linux ISO images, from your licensed Windows or macOS install disks, or from any number of virtual appliances.
Viable host candidates include the following.
Windows Vista SP1 and later (32-bit and 64-bit)
Windows Server 2008 (64-bit)
Windows Server 2008 R2 (64-bit)
Windows 7 (32-bit and 64-bit)
Windows 8 (32-bit and 64-bit)
Windows 8.1 (32-bit and 64-bit)
Windows 10 RTM build 10240 (32-bit and 64-bit)
Windows Server 2012 (64-bit)
Windows Server 2012 R2 (64-bit)
Note: Windows 10 Fall Creators Update will require an upgrade to VirtualBox to the latest release.
Apple OS X
10.11 (El Capitan)
Ubuntu 10.04 to 16.04
Debian GNU/Linux 6.0 ("Squeeze") and 8.0 ("Jessie")
Oracle Enterprise Linux 5, Oracle Linux 6 and 7
RedHat Enterprise Linux 5, 6, and 7
Fedora Core / Fedora 6 to 24
openSUSE 11.4 to 13.2
It is important to note that your host machine will need to have enough extra resources (storage and RAM) to run guest VMs as well as the host. Minimum system requirements are:
Reasonably powerful x86 hardware (how much RAM will depend upon how many VMs will be deployed, but 16 GB is a good minimum)
Storage: VirtualBox requires only about 30 MB of hard disk space. You will need enough storage to house your VMs, and VMs can easily start at 10 GB each.
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Dell EMC PowerEdge R7415 Server Review | killexams.com 1Z0-590 Real Questions and VCE Practice Test
July 12th, 2018 by Adam Armstrong
Earlier this year, Dell EMC released 2 new single-socket PowerEdge servers with AMD EPYC processors - the PowerEdge R6415 and the PowerEdge R7415. The PowerEdge R7415 is a 2U single-socket server with enterprise-class AMD EPYC processors available. Being a single-socket server, users can expect a cost savings in both lower licenses costs and power costs, resulting in a better TCO. Of course, AMD has also stated that the price of the CPU is lower than the two CPU counterparts, giving the R7415 access to new workloads where conventional dual-socket systems may not be ideal. The R7415 can be loaded with up to 24 NVMe drives that not only can bring a large performance boost but with the ever increasing density of these drives, can potentially offer incredible capacity. This would position the server ideally for use cases such as software de?ned storage (SDS) or business analytics.
While AMD EPYC processors offer many features, one of the most significant is its high PCIe lane count per CPU (128 PCIe lanes per single CPU). This is important for two reasons. First, it offers 3x more lanes than single socket x86 systems (only 48 lanes), allowing for more I/O per CPU. More importantly, it unlocks capabilities and performance previously available only in 2-socket architectures without the related overprovisioning. This also allows for new system configurations on a single socket server, focusing more on I/O capabilities.
In addition to leveraging EPYC’s high PCIe lane count, the unique design of the PowerEdge R7415 provides up to 12 direct-connect, hot-swap NVMe drives (maximum 24 drives with some switching). NVME drives pack a performance punch and emerging developments see them increasing density. So if one were to fully load the R7415 they should see a big boost in performance as well as a potentially very dense 2U server. Dell EMC goes on to state that, even fully loaded with 24 NVMe drives, the server still has enough lanes available to power 4 standard rear PCIe slots with an optional 2 x 10GE mezzanine card. Additionally, the PowerEdge R7415 can pack in 2TB of memory with its 16 DDR4 DIMM slots.
Leveraging AMD CPUs hasn't changed the fundamental value proposition PowerEdge offers; the R7415 has the same features users enjoy and have come to expect from the PowerEdge line. This includes the feature-rich LifeCycle Controller, iDRAC, and OpenManage Mobile offerings. These support features can sway customers away from low-cost white box systems that don't include the same depth-of-management capabilities. The R7415 also has security options built-in, with features such as cryptographically trusted booting and silicon root of trust.
Dell EMC PowerEdge R7415 Server Specifications Form Factor 2U CPU AMD EPYC 7551P 2.00GHz/2.55GHz, 32C/64T, 64M Cache (180W) DDR4-2666 Memory 16 DDR4 2666MT/s RDIMM Drive bays Front Up to 24 x 2.5” SATA/SAS/NVMe or up to 12x 3.5” SAS/SATA HDD Rear Up to 2 x 3.5” SAS/SATA HDD Storage Controllers Internal Internal Controllers: PERC H330, H730p, H740p, HBA330Boot Optimized Storage System: HW RAID 2 x M.2 + Internal USB + Internal Dual SD ModuleExternal PERC (RAID): H84012Gbps PERC9 or 10 series, mini PERC x8 slot Ports Front Video, 2 x USB 2.0, dedicated iDRAC Direct Micro-USB Rear
LOM: 2 x 1GE embedded + optional 2 x 1GE or 2 x 10GE LOM Mezzanine card
Video, Serial 2 x USB 3.0, dedicated iDRAC network port; Optional hot swap 2 x 3.5” SAS/SATA drive bay (2.5” drives supported in hybrid drive carrier)
Riser options Up to 4 x Gen3 slots - 2 x 16 FHFL PCIe slots and 2 x low profile slots (1 x8, 1 x16) Supported OS Microsoft Windows Server 2016 Red Hat Enterprise Linux 7.4 VMware vSphere 2016 U1 (ESXi 6.5 U1) Microsoft Windows Server 2012 R2 Power
Titanium 750W, Platinum 495W, 750W, 1600W, and 1100W 240HVDC 750W, Hot Plug power supplies with full redundancy options
Design and Build
As stated, the Dell EMC PowerEdge R7415 is a 2U server. Across the front of the device are the drive bays that fit up to 24 NVMe SSDs (there are configuration options for users that have different needs such as 3.5” drives). The left side of the device has the LED lights for system health and system ID as well as the iDRAC Quick Sync 2 indicator. The right side of the device has the power button, USB port, iDRAC Direct port, and VGA port.
The rear of the server has the usual suspects such as removable PSUs on the right, 2 optional LAN ports are provided by a mezzanine card (2 x 1GE or 2 x 10GE) on the bottom middle two embedded 1GE LAN ports on the left, followed by two USB 3.0 ports, an iDRAC9 dedicated network port, a VGA port, a serial port, a CMA power port, and a system ID button. There are also blank spots for full-height PCIe expansion cards (for two 3.5” drives for instance), and two half-height PCIe expansion cards.
The server opens up easily to reveal the single AMD EPYC CPU roughly in the middle of the device. The 16 DIMM Slots are around the CPU (8 on each side). It also offers easy access to the PSUs, optional low-profile risers, optional mini PERC card, and the optional ability to add two 3.5” drives on the rear backplane.
We are no strangers to PowerEdge servers; however, this is the first one we’ve seen in a while that didn’t have easy, tool-less access on the inside. That isn’t to say that it wasn't still easy to access. It just took a few seconds longer than normal and seemed a bit odd, like a minuscule step backward.
As with other PowerEdge Servers, the R7415 offers a wide range of management options. For a more in-depth look readers can check out our deep dive in the Dell EMC PowerEdge R740xd review and our look into Dell EMC’s OpenManage Mobile app.
The Dell PowerEdge R7415 our team reviewed came well-equipped with both SAS and NVMe flash. On the CPU front, this system included the 2GHz AMD EPYC 32-core/64-thread 7551P CPU and 256GB of DDR4. In our performance tests, we tested both the NVMe and SAS SSDs with our VDBench synthetic tests, configured in JBOD, and in our SQL Server and Sysbench tested focused on NVMe performance only. Workloads were spread out evenly across all drives.
SQL Server Performance
StorageReview’s Microsoft SQL Server OLTP testing protocol employs the current draft of the Transaction Processing Performance Council’s Benchmark C (TPC-C), an online transaction processing benchmark that simulates the activities found in complex application environments. The TPC-C benchmark comes closer than synthetic performance benchmarks to gauging the performance strengths and bottlenecks of storage infrastructure in database environments.
Each SQL Server VM is configured with two vDisks: 100GB volume for boot and a 500GB volume for the database and log files. From a system resource perspective, we configured each VM with 16 vCPUs, 64GB of DRAM and leveraged the LSI Logic SAS SCSI controller. While our Sysbench workloads tested previously saturated the platform in both storage I/O and capacity, the SQL test looks for latency performance.
This test uses SQL Server 2014 running on Windows Server 2012 R2 guest VMs, and is stressed by Dell's Benchmark Factory for Databases. While our traditional usage of this benchmark has been to test large 3,000-scale databases on local or shared storage, in this iteration we focus on spreading out four 1,500-scale databases evenly across our servers.
SQL Server Testing Configuration (per VM)
Windows Server 2012 R2
Storage Footprint: 600GB allocated, 500GB used
SQL Server 2014
Database Size: 1,500 scale
Virtual Client Load: 15,000
RAM Buffer: 48GB
Test Length: 3 hours
2.5 hours preconditioning
30 minutes sample period
For SQL Server, we looked at individual VMs as well as aggregate scores. The transactional results showed an aggregate score of 12,618.1 TPS with individual VMs ranging from 3,152.9 TPS to 3,155.8 TPS.
With average latency, the R7415 gave an aggregate score of 11.75ms with individual VMs running between 10ms and 14ms.
Sysbench MySQL Performance
Our first local-storage application benchmark consists of a Percona MySQL OLTP database measured via SysBench. This test measures average TPS (Transactions Per Second), average latency, and average 99th percentile latency as well.
Each Sysbench VM is configured with three vDisks: one for boot (~92GB), one with the pre-built database (~447GB), and the third for the database under test (270GB). From a system resource perspective, we configured each VM with 16 vCPUs, 60GB of DRAM and leveraged the LSI Logic SAS SCSI controller.
Sysbench Testing Configuration (per VM)
CentOS 6.3 64-bit
Percona XtraDB 5.5.30-rel30.1
Database Tables: 100
Database Size: 10,000,000
Database Threads: 32
RAM Buffer: 24GB
Test Length: 3 hours
2 hours preconditioning 32 threads
1 hour 32 threads
In our Sysbench benchmark, we tested the R7415 with a similar layout to the above. For transactional performance, the sever had an aggregate average TPS of 7,567.3 with individual VMs ranging from 1,817.6 TPS to 1,967.1 TPS.
With Average latency, the R7415 had an aggregate latency of 16.9ms, with individual VMs hitting latencies of 16.3ms to 17.6ms.
In our worst-case 99th percentile latency measurement, the server hit an aggregate score of 45.4ms with individual VMs ranging from 42.7ms to 48.1ms.
VDBench Workload Analysis
With the latest-and-greatest server, it is highly tempting to toss in the latest-and-greatest storage to get the biggest bang for the buck. However, not everyone is going to do this, and several users will be upgrading their servers with their existing storage or with lower-cost SAS-based flash. For our review, we populated the server with both NVMe and SAS storage for each benchmark. This isn’t a "which one is better" scenario, because from a performance perspective, the NVMe will win. This is more of a "what to expect with the given storage" scenario and should be looked at in this manner.
Our last section of local performance testing focuses in on synthetic-workload performance. In this area, we leveraged four SAS and four NVMe SSDs in a bare-metal environment running Ubuntu 16.04.4. The workload was configured to stress 25% of each drive's capacity, focusing on sustained performance versus steady-state, worst-case performance.
When it comes to benchmarking storage arrays, application testing is best and synthetic testing comes in second place. While not a perfect representation of actual workloads, synthetic tests do help to baseline storage devices with a repeatability factor that makes it easy to do apples-to-apples comparison between competing solutions. These workloads offer a range of different testing profiles ranging from "four corners" tests, common database transfer size tests, as well as trace captures from different VDI environments. All of these tests leverage the common vdBench workload generator, with a scripting engine to automate and capture results over a large compute testing cluster. This allows us to repeat the same workloads across a wide range of storage devices, including flash arrays and individual storage devices.
4K Random Read: 100% Read, 128 threads, 0-120% iorate
4K Random Write: 100% Write, 64 threads, 0-120% iorate
64K Sequential Read: 100% Read, 16 threads, 0-120% iorate
64K Sequential Write: 100% Write, 8 threads, 0-120% iorate
Synthetic Database: SQL and Oracle
VDI Full Clone and Linked Clone Traces
Looking at peak read performance for the SAS drives, the PowerEdge R7415 started at 19,686 IOPS with a latency of 132µs and stayed below 1ms until it hit roughly 180K IOPS and peaked at 196,299 IOPS with a latency of 2.11ms.
For peak read NVMe performance, the R7415 stayed below 1ms throughout, peaking at 2,358,609 IOPs with a latency of 212µs.
For peak SAS write performance, the R7415 had sub-millisecond throughout starting at 18,519 IOPS and peaking at 179,249 IOPS with a latency of 816µs.
Peak NVMe write performance showed the server hitting 1,252,375 IOPS with a latency of 179µs.
When we switch over to sequential benchmarks (64K), we see a bit of an odd performance from the SAS drives. With the 64K read, the performance starts off with high latency 18.7ms and drops off throughout as the performance improves, finishing at 27,865 IOPS or 1.74GB/s with a latency of 2.3ms.
NVMe 64K read has the server hitting 193,835 IOPS or 12.1GB/s with the higest latency being 329µs.
The 64K write with SAS showed similar performance, starting with a latency of 8.1ms and peaking at 1.95GB/s or 31,221 IOPS with a latency of 1ms.
The 64K write performance of the NVMe actually had the server running about 50µs up until about 35K IOPS and peaking at 88,180 IOPS or 5.51GB/s with a latency of 355µs.
Switching over to our SQL workload, the SAS drives had a better overall showing with sub-millisecond latency throughout, peaking at about 193K IOPS with a latency of 481µs.
For the SQL results of the NVMe in the R7415, we saw a peak performance of 973,568 IOPS with a latency of just 130µs.
For SQL 90-10, the SAS drives in the R7415 again had sub-millisecond latency throughout, this time peaking at 183,606 IOPS with a latency of 528µs.
The NVMe SQL 90-10 peaked at 802,921 IOPS with a latency of 157µs.
With SAS SQL 80-20, the server had sub-millisecond latency the whole time with a peak performance of 174,882 IOPS and a latency of 557µs.
For the SQL 80-20 on the R7415 with NVMe drives, we saw a peak performance of 671,888 IOPS with a latency of only 188µs.
Moving on to Oracle workloads, the SAS-loaded R7415 was able to hit 170,844 IOPS all while maintaining latency under 1ms (peak latency was 671µs).
The Oracle NVMe version of the R7415 peaked at 586,026 IOPS at a latency of 226µs.
For the Oracle 90-10 performance with SAS drives, the server peaked at 182,345 IOPS with a latency of 439µs.
The NVMe version of the Oracle 90-10 benchmark had the server peak at 645,168 IOPS at a latency of only 135µs.
With the Oracle 80-20, the R7415 with SAS peaked at 171,694 IOPS with a latency of 458µs.
The NVMe Oracle 80-20 benchmark saw the R7415 peak at 553,829 IOPS with a latency of 157µs.
Next we switched over to our VDI Clone Test, Full and Linked. For VDI Full Clone Boot with SAS, the PowerEdge R7415 had sub-millisecond latency throughout with a peak score of roughly 181K IOPS and a latency of about 610µs.
With the NVMe-loaded R7415, the VDI Full Clone Boot test gave us a peak performance of 636,481 IOPS with a latency of 203µs.
For the VDI Full Clone Initial Login with SAS, the server still had sub-millisecond latency throughout--but only just so. It peaked at 107,633 IOPS with 991µs.
The VDI Full Clone Initial Login with NVMe had the R7415 reach a peak performance of 248,517 IOPS with a latency of 475µs.
With the VDI Full Clone Monday Login with SAS, the server peaked at 82,754 IOPS and a latency of 712µs.
With the NVMe Full Clone Monday Login, the server hit a peak performance of 162,859 IOPS with a latency of 386µs.
Switching over to VDI Linked Clone, the boot test for SAS showed the PowerEdge R7415 to have a peak performance of 129,826 IOPS with a latency of 482µs.
The NVMe version of the R7415 had peak performance of 357,173 IOPS and a latency of 178µs on the VDI Linked Clone Boot.
For the SAS VDI Linked Clone Initial Login, the server was able to hit 49,760 IOPS with a latency of 639µs.
With the VDI Linked Clone Initial Login with NVMe, the R7415 had peak performance of 88,746 IOPS with a latency of 357µs.
The VDI Linked Clone Monday Login for SAS had a peak performance of 61,513 IOPS with a latency of 974µs.
And finally, the VDI Linked Clone Monday Login with NVMe drives had the server hit 121,351 IOPS with a latency of 522µs.
The Dell EMC PowerEdge R7415 is a single-socket server that features a CPU from AMD’s new EPYC line. With the new processor, Dell EMC and AMD claim that users will see a performance bump accompanied by lower TCO through socket licensing and power needs. The R7415 comes with an ample amount of space to add devices to boost performance. For instance, users can add 16 DDR4 DIMMs that can hold up to 2TB of memory and can add up to 24 NVMe SSDs--all within the small 2U footprint. The PowerEdge R7415 comes with all of the features that make PowerEdge servers attractive for potential buyers such as LifeCycle Controller, iDRAC, and OpenManage Mobile, as well as the company’s new built-in security features such as cryptographically trusted booting and silicon root of trust. The PowerEdge R7415 is designed mainly for use in SDS and business analytics, though it could certainly be used for other use cases.
In our applications performance benchmarks, we looked at the performance of the PowerEdge R7415 using 4VMs to see individual performance as well as aggregate. In our SQL Server transactional test, we saw an aggregate score of 12,618.1 TPS, while the individual VMs ran from 3,152.9 TPS to 3,155.8 TPS. For the average latency of the same test, the server had an aggregate score of 11.75ms, while the individual VMs ran from 10ms to 14ms. For Sysbench, we saw aggregate scores of 7,567.3 TPS, an average latency of 16.9ms, and a worst-case scenario latency of 45.4ms.
Key findings in our Application Performance benchmarks:
SQL Server transactional test: Aggregate score of 12,000+ TPS with an average latency of 11.75ms while individual VMs exceeded 3,150 TPS with latencies under 15ms.
Sysbench tests: Aggregate scores of 7,500+ TPS with an average latency of 16.9ms.
In our VDBench workloads, we ran both SAS and NVMe storage. As stated above, this wasn’t to see which one is “better,” as obviously NVMe will have a higher performance punch. However, this demonstrates to potential users what they can expect with different types of storage media. Instead of going through every result above, we’ll just look at some highlights of each drive type. For NVMe, there was sub-millisecond latency performance in every test, we saw 4K read performance as high as 2.36 million IOPS with 4K write hitting 1.25 million IOPS. 64K sequential performance for the NVMe was 12.1GB/s read and 5.51GB/s write. The R7415 loaded with NVMe drives was also able to hit nearly 1 million IOPS in our SQL benchmark. The SAS readings were less dramatic, but still strong. The SAS setup on the R7415 only had latency above 1ms on the 4K and 64K tests. With SAS drives, the server was able to hit nearly 200K IOPS on 4K read and 180K IOPS on 4K write. With sequential performance, the SAS drives hit
1.74GB/s read and 1.95GB/s write. During our Oracle and SQL workloads, the SAS-based R7415 had performance near 200K IOPS with sub-millisecond latency.
Key findings in our VDBench workloads:
All NVMe storage: Sub-millisecond latency performance in every test, with 4K read performance as high as 2.36 million IOPS and 4K write performance hitting 1.25 million IOPS; also, the R7415 was also able to hit nearly 1 million IOPS in our SQL benchmark.
SAS setup: Latencies above 1ms on the 4K and 64K tests and while hitting nearly 200K IOPS on 4K read and 180K IOPS on 4K write; with Oracle and SQL workloads, achieved almost 200K IOPS with sub-millisecond latency.
The R7415 is clearly a capable system that can be configured with high-performance storage and RAM at a decent pricepoint for value-minded buyers - without cutting back on options. This isn't insignificant, as many systems that target a more value-minded buyer cut back on options available. With support for 24 bays of NVMe and 2TB of RAM, the R7415 can be tooled for very specific workloads that are less compute intensive and thus see a negative TCO impact when outfitted with dual processors. The PowerEdge EPYC systems are also an interesting option in software-defined situations where end users can save on CPU Socket-based licenses. This is especially true for something like VMware vSAN, where in a remote office, workloads are less heavy but the organization still wants the ease of management that vSAN offers and the quality PowerEdge brings to the table - just in a more affordable configuration.
Dell EMC PwerEdge R7415 product page
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