Hitachi Vantara Certified Expert - Performance architect (HCE-3700) Free Practice Test

Question 1

Which two statements are true regarding HDP pools? (Choose two.)

A. Using the largest possible pools is a recommended practice.

B. Tier migration is based on performance and space capacity.

C. Exposure to failure and recovery from failure must be considered when recommending the maximum size of a pool.

D. HDP pools can be used for sizing HDT pools.

Correct Answer: A,D

Question 2

A VSP G800 customer has one HDT pool with three tiers and they report a high frequency of relocations up and down between Tier 1 and Tier 2, affecting the HDT pool performance.
Which two actions will help solve the issue? (Choose two.)

A. Change the HDT pool setting from Period mode to Continuous mode.

B. Increase the size of the grey zone between Tier 1 and Tier 2.

C. Decrease the monitoring period of the HDT pool.

D. Increase the size of Tier 2.

Correct Answer: A,D

Question 3

Which two conditions will cause high Cache Write Pending on a VSP G8000? (Choose two.)

A. inadequate WAN bandwidth for TrueCopy Asynchronous

B. over-utilized external storage

C. attempting to write to a RAID group at a rate beyond its ability

D. high port utilization

Correct Answer: B,C

Question 4

Which two UNIX commands provide metrics about disk device I/O activity? (Choose two.)

A. sar

B. iostat

C. perfmon

D. iogen

Correct Answer: A,B

Question 5

A mission critical SQL server application that resides in a three-tier HDT pool is showing response time spikes that may be related to I/O activity.
Which three Hitachi Tuning Manager reports would you use to determine the problem? (Choose three.)

A. IOPS by dataset.

B. IOPS by tier

C. IOPS by V-Vol

D. IOPS by pool

E. IOPS by parity group

Correct Answer: B,D,E

Question 6

You are sizing a storage system for a response-sensitive database application in a VMware environment.
Which two statements are true in this scenario? (Choose two.)

A. Sizing estimations for a database workload should be based on a steady state and then an extra 10% resources for headroom should be added.

B. The cache hit percentage is determined primarily by the amount of cache provided by the storage system.

C. The peak load requirements of the database and filesystem is a key factor in determining the resources required to meet response time requirements.

D. The server virtualization will change the I/O profile of the application as viewed by the storage.

Correct Answer: C,D

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Hitachi Vantara Certified Expert - Performance architect (HCE-3700) Free Practice Test