XtremIO Solutions and Design Specialist Exam for Technology Architects E20-526 Exam Questions with VCE and PDF for Free Download from PassLeader (Question 41 – Question 45)

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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.
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.

A customer has a large ESX server environment they are considering deploying to XtremIO for a VDI implementation. To determine a baseline of the environment, you are proceeding with documenting each server’s CPU, NIC, and disk utilization statistics. The customer has provided you with direct CLI access to the servers to conduct this assessment. Which utility should be used to monitor these performance parameters?

A.    esxtop
B.    resxtop
C.    top
D.    iostat

Answer: B
resxtop is a command to retrieve performance statistics. This command is included in vSphere command line interface (CLI) and is part of the vSphere Management Assistant (vMA), which is an equivalent to esxtop that runs only inside an ESX service console.
Not A: esxtop runs only inside an ESX service console.
Not D: Use the iostat command to report statistics about disk input and output, and to produce measures of throughput, utilization, queue lengths, transaction rates, and service time.
https://www.emc.com/collateral/TechnicalDocument/docu5265.pdf (page 22)

A customer has recently purchased an XtremIO 10 TB single X-Brick cluster for an implementation of Oracle RAC. The customer wants your help with integrating Oracle with their new XtremIO cluster. The customer has three DATA disk groups, two REDO disk groups, and four FRA disk groups. How many XtremIO LUNs should be assigned to the FRA disk groups?

A.    2
B.    4
C.    6
D.    8

Answer: D
Best practice is to use four LUNs for the DATA disk group to allow the host to use simultaneous threads. The REDO and FRA disk groups should use two LUNs each.

Which multipathing software is supported by XtremIO?

A.    PowerPath/VE and NMP on ESXi hosts
B.    MPIO on non-clustered Microsoft Windows hosts only
C.    PowerPath/VE on Microsoft Windows VMs hosted by ESXi
D.    Native MPIO on IBM AIX clusters

Answer: A
Noting the inefficiencies in VMware’s NMP driver, EMC developed a set of drivers specifically designed to overcome these limitations and improve the performance and reliability of the data passing between an array and a server. EMC developed the PowerPath family of products optimized specifically for Linux, Microsoft Windows, and UNIX Operating Systems as well as PowerPath/VE for VMware vSphere and Microsoft Hyper-V hypervisors. PowerPath is installed on hosts to provide path failover, load balancing and performance optimization VPLEX engines (or directly to the XtremIO array if VPLEX is not used).
VMware, with the cooperation of its storage partners, developed a Native Multipathing Plug-in (NMP). VMware NMP was designed to distribute the load over all the available paths and provide failover protection in the case of path, port or HBA failure, but it has not been fully optimized to work with the controllers in a storage systems. VMware’s NMP Round Robin policy does not have the intelligence that PowerPath has as PowerPath uses testing and diagnostics to continually monitor an environment to determine the optimal path for queuing requests and will adapt to current conditions.

Based on best practice, what is the maximum number of paths a host should have to an XtremIO volume?

A.    4
B.    8
C.    16
D.    32

Answer: C
The recommended maximum number of paths to storage ports per host is 16 as per the table below:
https://www.emc.com/collateral/white-papers/h14475-wp-xtremio-brocade-best-practices.pdf?isPublic=false (page 12)

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