HCE-3700 Online Practice Questions and Answers

You are designing a VSP G1000 solution for a customer and you need to determine the appropriate disk type and RAID level.

What information do you need to design the solution? (Choose three.)

A. type of workloads

B. workloads read-write ratio

C. operating systems used in the environment

D. fan-in and fan-out ratios

E. expected I/O rates

Response times in an HDP pool have been increasing consistently with each additional workload during a large scale migration. The response times may become unacceptable with subsequent migrations. The purchase of additional equipment is an acceptable solution.

What are two valid actions in this scenario? (Choose two.)

A. Increase the pool free space and alert thresholds to the maximum permitted levels.

B. Expand the pool with volumes from new parity groups to reduce utilization levels.

C. Apply the SOM to provide tier property information that assesses suitability for HDT and deployment of flash.

D. Use more, smaller, pool LDEVs per parity group to improve the efficiency and utilization of the queues.

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. Decrease the monitoring period of the HDT pool.

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

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

D. Increase the size of Tier 2.

When testing an external LUN with default mapping on two paths, performance appears constrained and the utilization of the RAID group in the external storage system never exceeds 35% busy no matter how many test threads are generated. You want to increase the utilization of the external RAID group.

Which two actions will accomplish this task? (Choose two.)

A. Increase the external path LUN queue depth setting.

B. Increase the number of LUNs mapped from the external RAID group.

C. Change Cache Mode to "Disabled".

D. Increase the server HBA LUN queue depth to 64.

You are deploying an external storage system and its connection to a VSP G1000. The VSP G1000 has four external pools. You must ensure balanced utilization of the external storage system parity groups within each pool.

What would you do to satisfy this requirement?

A. Use only one external volume per external parity group with the default UVM queue depth.

B. Slice each external parity group to provide a pool volume for each pool.

C. Ensure that volumes from a parity group in an external system are exclusively associated with the same external parity group in the storage system connected to the host.

D. Provide eight paths for each volume presented by the external storage system to the storage system connected to the host.

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 V-Vol

C. IOPS by pool

D. IOPS by tier

E. IOPS by parity group

A customer wants to add a new flash-based tier to an existing HDT pool. You refer to the Tier properties chart to determine if the workload in a disk-based HDT pool is a good candidate for adding a new and higher flash tier.

In this scenario, what does the chart tell you?

A. The utilization line starts at a low level and gradually climbs to a high spike at the extreme right-hand side.

B. The utilization line starts at a medium level on the left side and fails away slowly.

C. The utilization line stays at a high level until half way across the chart then drops sharply.

D. The utilization line starts at a high level on the left side then drops away sharply.

You are planning for a performance upgrade for a transaction application.

Which three metrics are necessary to determine the required back-end storage configuration in this scenario? (Choose three.)

A. cache read hit ratio

B. read/write ratio

C. transfer rates

D. queue depth

E. IOPS

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

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

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

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

You are recommending RAID 6 to a customer for a non-database HDT pool.

What are two reasons for this recommendation? (Choose two.)

A. When capacity is pooled; the whole pool is affected when one parity group fails.

B. RAID 6 provides the most efficient use of system processor resources.

C. RAID 6 minimizes exposure to double disk failure.

D. RAID 6 provides the optimum overall performance of all RAID types.

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 throughput of all SAN directors.

B. Export two months of Performance Monitor data.

C. Measure the storage resource utilizations.

D. Request a statement of growth requirements.

E. Measure the existing I/O profile.

A customer complains about high response times. This occurs frequently with bursts of write I/O at 6,000 IOPS for 10 second periods during each minute. The write response is 60 ms during these 10 second periods. The average IOPS rate reported by Hitachi Tuning Manager over 1 minute is 600.

In this scenario, what is the average response time over 1 minute?

A. 10 ms

B. 30 ms

C. 60 ms

D. 90 ms

Which two conditions are amplified by the use of longer data intervals for analysts? (Choose two.)

A. There will be more arbitrary data loss when viewing on a typical computer screen.

B. Analysis tools will require more processing time and computing resources.

C. The peaks values reported will reflect interactive user experience less accurately.

D. Analysis tools will require less processing time and computing resources.

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

A. over-utilized external storage

B. high port utilization

C. inadequate WAN bandwidth for TrueCopy Asynchronous

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

A customer is replicating VSP G1000 production data using HUR. The customer experiences a network outage. During the outage, the customer reported an increase in response times.

Which two actions would minimize this problem during future network outages? (Choose two.)

A. Leave the HUR SOM in the default setting.

B. Set the SOM that suspends pairs during outages.

C. Add volumes in the journal.

D. Increase the size of the Journal Pool capacity by adding additional parity groups.