EMC E20-880 Online Practice Questions and Exam Preparation

EMC E20-880 Online Questions & Answers

• Question 141:

  A customer is implementing a VNX for File solution in a performance-oriented application environment. There are Windows and Linux VM clients accessing the file systems. The customer wants to track both file system and DataMover utilization. The Performance Administrator prefers GUI to CLI access.

  What would you recommend?

  A. Unisphere Statistics for File
  B. server_stats
  C. Custom monitoring script
  D. Unisphere Analyzer
  A. Unisphere Statistics for File

• Question 142:

  A customer needs to move data from a CLARiiON to a new VNX storage system. Attempts to configure a SAN Copy session with Unisphere fail. The customer uses Navisphere Secure CLI to configure the session. The session can be successfully started from Navisphere Secure CLI but fails just prior to completion each time it is started.

  What is the cause of the failure?

  A. Source and target LUN IDs do not match.
  B. Source is a standard LUN and the target array has only metaLUNs available.
  C. Source LUN is larger than the target LUN.
  D. Source LUN is RAID 1/0 and the target LUN is RAID 5.
  B. Source is a standard LUN and the target array has only metaLUNs available.

• Question 143:

  Click the calculator icon in the upper left-hand corner. An application generates 1000 IOPS with a read/ write ratio of 3:1. What is the difference in disk IOPS between RAID 1/0 and RAID 5 for this workload?

  A. There are 500 fewer IOPS for RAID 1/0
  B. There are 250 fewer IOPS for RAID 5
  C. There are 1000 fewer IOPS for RAID 1/0
  D. They have the same number of IOPS
  A. There are 500 fewer IOPS for RAID 1/0

• Question 144:

  A customer has recently implemented Microsoft Exchange 2010 on a VNX storage system that hosts a variety of application servers. The Exchange implementation is currently using RAID 5 (4+1) and uses FAST Cache for the database volumes, but is not using FAST VP. Performance has been significantly diminished.

  What would you recommend to the customer?

  A. Isolate server workload to dedicated set of spindles.
  B. Implement FAST VP.
  C. Combine log and database volumes in a storage pool.
  D. Implement a RAID 6 configuration.
  A. Isolate server workload to dedicated set of spindles.

• Question 145:

  A company recently purchased a VNX storage system to support its clustered SQL Server environment. You are designing the disk layout.

  Based on EMC best practices, what design characteristics should you follow when configuring SQL Server on the VNX?

  A. Basic disks, NTFS volumes of 64 KB clusters
  B. Basic disks, NTFS volumes of 128 KB clusters
  C. Dynamic disks, NTFS volumes of 64 KB clusters
  D. Dynamic disks, NTFS volumes of 128 KB clusters
  A. Basic disks, NTFS volumes of 64 KB clusters

• Question 146:

  Your customer is taking over administration of a VNX and is looking over the performance reporting capabilities. While looking at the Analyzer Performance Summary Chart, the customer notices blue dotted lines and asks you what these are. What do the blue dotted lines represent?

  A. level at which a threshold had been set.
  B. level at which a specific metric has peaked
  C. average over the given time period for a specific metric
  D. minimum level over the given time period for a specific metric
  A. level at which a threshold had been set.

• Question 147:

  You have designed an Auto-tiering solution using Flash, SAS, and NL-SAS disks in your storage pool. Your design was implemented and scheduling has been running daily. The customer reports that there is no data in the NL-SAS tier. Why is this the case?

  A. Data was previously moved to another tier
  B. Scheduling is not required for this configuration
  C. Tiering is set up for Lowest Available Tier
  D. There was no data in the Flash drives to start with
  A. Data was previously moved to another tier

• Question 148:

  A customer with a VNX for File system has a mix of Windows and Linux clients. The Storage Administrator wants to track and examine different types of correlated statistics for their file system read and write operations. Which correlated statistic can accomplish this job?

  A. fs.qtree
  B. cifs.client
  C. nfs.client
  D. fs.client
  A. fs.qtree

• Question 149:

  You are in a design session with a customer of an ESXi 5.0 cluster. One of the stakeholders inquires about vNUMA. By default, what is the minimum number of CPUs in a vNUMA enabled environment?

  A. More than 4 vCPU
  B. More than 8 vCPU
  C. More than 12 vCPU
  D. More than 16 vCPU
  B. More than 8 vCPU

• Question 150:

  Your customer has a Microsoft SQL installation on a VMware guest Windows 2003 Server using RDM. The ESXi server uses a VNX system.

  What would you recommend to your customer to avoid misalignment between a partition used by the Windows 2003 Server and the underlying physical disk?

  A. Use an NTFS allocation unit size of 64 KB and an offset value of 1024.
  B. Use an NTFS allocation unit size of 32 KB and an offset value of 1024.
  C. Alignment is automatically handled by Windows.
  D. Alignment for the virtual disk is handled by the ESXi server.
  A. Use an NTFS allocation unit size of 64 KB and an offset value of 1024.