Dell EMC E20-526 Exam Questions Instant Access

Question 1

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?

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

Question 2

A customer has purchased a two X-Brick XtremIO array with a physical XtremIO Management Server (XMS). The customer plans to use all Fibre Channel connectivity in the environment.

What are the physical connectivity requirements for the cluster?

A1 Copper Ethernet connection, 4 Fibre Channel Optical connections

B3 Copper Ethernet connections, 8 Fibre Channel Optical connections

C4 Copper Ethernet connections, 16 Fibre Channel Optical connections

D5 Copper Ethernet connections, 8 Fibre Channel Optical connections

Answer : B

EMC XTREMIO 4.0 SYSTEM SPECIFICATIONS

References:http://www.aecl.com/AECWeb/media/Assets/PDF/h12451-xtremio-4-system-specifications-ss.pdf

Question 3

When installing a physical XtremIO Management Server (XMS) station, which requirement must be met?

AXMS must be able to access one of the management ports on one X-Brick storage controller in the cluster

BXMS must be able to access only the management ports on the first X-Brick's storage controllers

CXMS must be able to access all management ports on the X-Brick storage controllers

DXMS must be able to access all management ports on at least two X-Brick storage controllers in the cluster

Answer : C

The XMS must access all management ports on the X-Brick Storage Controllers, and must be accessible by any GUI/CLI client host machine.

References: Introduction to the EMC XtremIO STORAGE ARRAY (April 2015), page 48

Question 4

You need to design an Oracle solution for a customer. Which XtremIO best practices should be used in Oracle environments?

AUse a 512 byte LUN sector size for databases. Use Eager Zeroed Thick formatting for ESXi

BUse a 4 kB LUN sector size for databases. Use Lazy Zeroed Thick formatting for ESXi

CAlign data on 4 kB boundaries. Use Thin formatting on ESXi

DAlign data on 4 kB boundaries. Use Lazy Zeroed Thick formatting on ESXi

Answer : A

The default setting for XtremIO volumes is 512e. It is recommended not to alter this in order to use 4K Advanced Format for Oracle Database deployments. There are no performance ramifications when using 512e volumes in conjunction with an Oracle database. On the contrary, 4K Advanced Format is rejected by many elements of the Oracle and Linux operating system stack.

References:https://www.emc.com/collateral/white-papers/h13497-oracle-best-practices-xtremio-wp.pdf, page 20

Question 5

As shown in the exhibit, a customer's environment is configured as follows:

What should be the host queue depth setting per path?

A64

B128

C256

D1024

Answer : C

The queue depth is perLUN, and not perinitiator. Here there are 64 LUNs, each visible through 4 paths, which would indicate that 256 is a good choice for the queue depth setting.

Note: As a general advice, for optimal operation with XtremIO storage, consider the following: Set the queue depth to 256.

References:https://www.emc.com/collateral/white-paper/h14583-wp-best-practice-sql-server-xtremio.pdf

Question 6

Where is the XtremIO VSS hardware provider package installed?

AOn all X-Bricks in the cluster

BOn the XMS

CFactory-installed on the array

DOn the backup server

Answer : D

In order to use the XtremIO VSS provider it must be installed on the server where we want to do an application consistent snapshot.

References:http://muegge.com/blog/tag/xtremio/

Question 7

A customer has decided to use VMware Horizon View as their desktop virtualization technology. Their VDI environment will consist of XtremIO storage and ESXi hosts. They are looking for increased speed and low latencies while performing file copy operations.

What should the setting for VAAI XCOPY I/O size be set to in order to achieve this requirement?

A8 kB

B63 kB

C256 kB

D4 MB

Answer : C

The VAAI XCOPY I/O size of 256 kB gives the best performance. 4 MB is the default value.

References: https://www.emc.com/collateral/white-papers/h14279-wp-vmware-horizon-xtremio-design-considerations.pdf, page 57

Dell EMC Technology Architect, XtremIO Solutions Specialist E20-526 Exam Questions