EMC E20-885 Online Practice Questions and Exam Preparation

EMC E20-885 Online Questions & Answers

• Question 271:

  Refer to the exhibit.

  

  During an Incremental SAN Copy bulk copy session, on the Source LUN, data blocks A, B, C, and D are all transferred to the Destination LUN. Before data block E can be sent to the Destination LUN, data blocks B and E are updated and become data blocks B` and E`.

  What data will be shown in the Transfer DeltaMap, Tracking DeltaMap, and Destination LUN once the start copy session is complete?

  A. Transfer DeltaMap: 0 Tracking DeltaMap: 1 Destination LUN: E
  B. Transfer DeltaMap: 0 Tracking DeltaMap: 0 Destination LUN: E`
  C. Transfer DeltaMap: 1 Tracking DeltaMap: 1 Destination LUN: E
  D. Transfer DeltaMap: 0 Tracking DeltaMap: 1 Destination LUN: E`
  B. Transfer DeltaMap: 0 Tracking DeltaMap: 0 Destination LUN: E`

• Question 272:

  Refer to the exhibit.

  

  A VNX Snapshot is started on a thick LUN at 09:37. The customer wants to know why throughput drops gradually after the 09:49 data point. What should be your explanation?

  A. VNX Snapshot and thick LUN slices are some distance apart, increasing disk seeks.
  B. Additional Reserved LUNs are being allocated to the thick LUN.
  C. The rate of thick LUN conversion to a thin LUN is slowing down.
  D. VNX Snapshot blocks on the thick LUN are being migrated, then compressed.
  A. VNX Snapshot and thick LUN slices are some distance apart, increasing disk seeks.

• Question 273:

  A Storage Administrator with a VNX Unified solution is using the CLI to monitor daily storage performance. They must type long commands to identify and examine their particular desired statistical results. You have been asked to create statistical groups to accelerate and ease the demanding monitoring tasks.

  What should you use to accomplish this job?

  A. nas_stats
  B. server_stats
  C. naviseccli
  D. iostat
  A. nas_stats

• Question 274:

  An SQL server is connected to a VNX array using dual HBAs connected to separate fabric switches with no ISLs (Inter Switch Links). PowerPath is used for multipathing. What is the minimum acceptable response time threshold that will ensure server to storage response time for log file write operations is "very good"?

  D

• Question 275:

  A customer is asking you for help. They are creating a script that will collect data from the array using CLI from the Control Station. They want to gather information on LUN data consumption including metadata, snapshot and compression. Which command will gather this information?

  A. navicli -h spa lun -list -l 0 all
  B. navicli -h spa lun -list -l 0
  C. navicli -h spa getdisk 0_0_0 -all
  D. navicli -h spa getcontrol -all
  A. navicli -h spa lun -list -l 0 all