XtremIO Solutions and Design Specialist Exam for Technology Architects v7.0 (E20-526)

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Total 67 questions

How can REST API commands be run to manage and monitor an XtremIO cluster?

  • A. From the REST API CLI built into each X-Brick
  • B. From the REST API GUI built into each X-Brick
  • C. From a third-party GUI
  • D. From the REST API tab in the XMS GUI

Answer : C

The XtremIO's RESTful API allows HTTPS-based interface for automation, orchestration, query and provisioning of the system. With the API, third party applications can be used to control and fully administer the array.
Normally you would access the API using some form of programming/scripting language, such as Python or Perl. However for the purposes of learning or testing concepts there are a number of tools that work better, such as HTTPRrequester and curl.
* Curl is a command-line tool that exists in all Linux distributions, and is available for most other Unix OSes as well as Windows.
To use curl to access XtremIO youll need to pass it a few options, such as the username/password to access the array (any valid account on the XtremIO XMS will work), the URL of the API, and potentially a few options such as -k to tell curl not to validate the
SSL certificate (presuming you dont have a valid certificate installed), and -s (silent) to stop curl displaying its progress as it downloads the response.
* HTTPRequester is a browser extension that is available for both Chrome and Firefox.
As with for curl, youll need to provide a username/password, which is done by clicking on the Authentication box, which adds two boxes below the URL for the username and the password.


A customer has two XtremIO clusters running 3.x software release. The customer just purchased a new XtremIO array that will be installed with the latest 4.x software release.
What is the minimum number of XtremIO Management Server(s) that will be required to manage all clusters?

  • A. 1
  • B. 2
  • C. 3
  • D. 4

Answer : C

The system operation is controlled via a stand-alone dedicated Linux-based server, called the XtremIO Management Server (XMS). A single XMS can manage multiple clusters.
Multiple cluster management is supported from version 4.0 and up. System version 4.0 supports up to eight clusters managed by an XMS in a given site.
References: Introduction to the EMC XtremIO STORAGE ARRAY (April 2015), page 48

How should a storage administrator navigate to different XtremIO clusters from the XMS
GUI if the administrator has more than one cluster managed by the same XMS?

  • A. Click the Cluster Name on the Menu bar near the top of the screen
  • B. Click the Inventory List button on the Menu bar
  • C. Click the Administration tab and locate the Cluster Name
  • D. Click the Cluster Name on the Status bar at the bottom of the screen

Answer : B

From the menu bar, the Inventory icon is to be clicked to display the Inventory workspace.
This workspace takes the place of the Hardware workspace in earlier versions of the
XtremIO GUI. With the All Clusters tab selected, we can see a list of all the hardware elements in the managed clusters.

Note: With time, additional clusters can be added to a deployed XMS. In addition, a cluster can be easily moved from one XMS to another. All management interfaces
(GUI/CLI/REST) offer inherent multi-cluster management capabilities. Multiple cluster management is supported from version 4.0 and up.

What is the maximum speed of the Fibre Channel ports on an XtremIO storage controller?

  • A. 2 Gb/s
  • B. 4 Gb/s
  • C. 8 Gb/s
  • D. 16 Gb/s

Answer : C

Each Storage Controller includes two 8Gb/s Fibre Channel (FC) ports.
References: Introduction to the EMC XtremIO STORAGE ARRAY (April 2015), page 8

Who developed the framework for testing All-Flash arrays that is used in the XtremIO PoC?

  • A. EMC
  • B. Seagate
  • C. Micron
  • D. IDC

Answer : D

IDC outlines a criteria some criteria for selecting a testing tool:
* Generate workloads
* Capture results for analysis:

Throughput -


Latency -

An XtremIO administrator is having a problem with performance and is troubleshooting the issue. What is an accurate statement about I/O transfers?

  • A. As I/O size increases, IOPs increase, and latency increases
  • B. As I/O size increases, IOPs decrease, and bandwidth increases
  • C. As I/O size decreases, IOPs increase, and bandwidth increases
  • D. As I/O size decreases, IOPs decrease, and latency increases

Answer : A

Large block I/O by nature incurs higher latency.
References: Introduction to the EMC XtremIO STORAGE ARRAY (April 2015), page 6

When creating XtremIO volumes for a host, which operating systems will benefit by changing the default logical block size for applications consisting of 4 KB I/Os?

  • A. Microsoft Windows and RHEL
  • B. VMware ESX and Microsoft Windows
  • C. RHEL and IBM AIX
  • D. Sun Solaris and HP-UX

Answer : B

With VMware ESX 5.5, the VMware hypervisor cannot work with LUNs that use a logical block size of 4K. When using VMware, be sure to specify Normal (512 LBs) from your
XtremIO array.
References:https://gruffdba.wordpress.com/2015/08/02/4k-logical-block-size-size-fails-on- vmware/

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Total 67 questions