EMC Technology Architect E20-545 Questions & Answers

• Question 221:

  Refer to the exhibit.

  

  After installing the FAST Cache enabler a user selects the properties of an existing LUN. Why is FAST Cache not enabled on this LUN?

  A. FAST Cache is not enabled by default on existing LUNs.

  B. Existing LUNs need to be removed from the storage group before FAST Cache is enabled.

  C. FAST Cache is not enabled by default on RAID 5 LUNs.

  D. FAST Cache is not enabled when SP read/write cache is disabled for the LUN.

  Correct Answer: A

• Question 222:

  A customer has created a pool with a Flash tier, a SAS tier and a NL SAS tier. The customer notices that there has been no data movement between the tiers after 24 hours. What would account for this behavior?

  A. FAST has not been enabled.

  B. Statistics logging has not been enabled.

  C. The SAS tier is under 90 percent capacity.

  D. The Flash tier is over 90 percent capacity.

  Correct Answer: A

• Question 223:

  In what chunk size does the Fast VP Scheduler move data between tiers for a LUN?

  A. 1 GB

  B. 64 KB

  C. 8 KB

  D. 648 MB

  Correct Answer: A

• Question 224:

  How many FAST VP schedules can exist for storage pools on a VNX system?

  A. 3

  B. 2

  C. 5

  D. 1

  Correct Answer: D

• Question 225:

  What is the default data relocation duration for the FAST VP Scheduler?

  A. 8 hours

  B. 4 hours

  C. 10 hours

  D. 6 hours

  Correct Answer: A

• Question 226:

  You have a thin LUN in a RAID 5 pool. What will be the result of moving this LUN to a RAID 1/0 VP pool?

  A. The thin LUN will be fully provisioned.

  B. The operation will fail; you cannot migrate between VP pools.

  C. Only the consumed space is copied.

  D. After the migration you will have a fully provisioned thick LUN.

  Correct Answer: C

• Question 227:

  You are preparing to use LUN migration to move a pool LUN to a traditional RAID group LUN. What effect will this migration have on the applications running on the host?

  A. This migration is accomplished without disruption to the applications running on the host.

  B. The applications running on the host must be stopped for the duration of the migration.

  C. The applications running on the host must be stopped for the final cutover from the pool LUN to the RAID group LUN.

  D. The application running on the host must be stopped for the time it takes to start the migration session.

  Correct Answer: A

• Question 228:

  The customer will be configuring metaLUNs for their application. The application requires the most predictable performance. Which type of metaLUN do you recommend?

  A. Striped

  B. Concatenated

  C. Hybrid

  D. Plaid

  Correct Answer: A

• Question 229:

  What is the minimum recommended number of disks in a RAID 5 group when using metaLUN?

  A. 5

  B. 3

  C. 7

  D. 9

  Correct Answer: A

• Question 230:

  You have just completed expanding a 20 GB LUN to a 40 GB stripe metaLUN for a Windows 2003 system.

  What Windows tool needs to be run to allow the host system to use the new allocated space?

  A. diskpar

  B. diskpart

  C. format

  D. chkdsk

  Correct Answer: B