Hitachi Vantara Certified Expert - Performance architect

Question 1

A large bank is completing a capacity planning exercise and wants to upgrade their current VSP G1000 to properly support their online banking application for the next 18 months. The IT department wants to know where they should invest to achieve the transactional Service Level Objective (SLO).
In this scenario, which three recommendations would you make? (Choose three.)

A. Measure the existing I/O profile.

B. Measure throughput of all SAN directors.

C. Request a statement of growth requirements.

D. Measure the storage resource utilizations.

E. Export two months of Performance Monitor data.

Correct Answer: C,D,E

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Question 2

A VSP G1000 performance analysis shows that server response times for virtualized volumes are high, 100 ms and higher, but HDD utilization rates in an external HUS 150 never exceed 35%. There are no processor or path constraints in the configuration. The workload is steady and stable. Which two actions will optimize this configuration? (Choose two.)

A. Migrate the HUS LUNs to RAID groups with faster HDDs.

B. Increase the external path LUN queue depth in the VSP G1000.

C. Spread the server load across more and smaller LUNS per RAID group in the HUS.

D. Break up each HUS LUN into several smaller volumes in the VSP G1000.

Correct Answer: B,C

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Question 3

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

A. iostat

B. sar

C. perfmon

D. iogen

Correct Answer: A,B

Question 4

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

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

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

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

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

Correct Answer: A,B

Question 5

Which three statements are true regarding the Hitachi external storage architecture? (Choose three.)

A. A System Option mode can force in sequence destaging even when destaging asynchronously.

B. Disabling Cache Mode for an external LDEV eliminates the use of cache.

C. Enabling Cache Mode always improves performance.

D. Enabling Cache Mode increases exposure to problems with high Cache Write Pending.

E. Enabling Cache Mode allows destaging asynchronously from host I/O.

Correct Answer: A,D,E

Question 6

Your customer has a VSP G1000 with an HDT pool with two tiers (SAS 15K and SAS 10K). The response times have increased over time to an unacceptable level. They want to add a flash tier and they ask you if this solution will be appropriate.
Which tool should you use to satisfy the requirement?

A. Tier Properties Performance Graph

B. Hitachi Server Priority Manager

C. Hitachi Tiered Storage Manager

D. Hitachi Universal Volume Manager

Correct Answer: A

Hitachi Vantara Certified Expert - Performance architect - HCE-3700 Exam Practice Test

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