HCE-3700 Online Practice Questions and Answers

A VSP G800 HDT pool contains FMDs, NL-SAS drives, external storage with 15K 600 GB SAS drives, and external storage with 10K 900 GB SAS drives.

Which tier level contains the NL-SAS drives in this configuration?

A. 1

B. 2

C. 3

D. 4

Your customer has an HDP pool dedicated to interactive production workloads. Which two applications are good candidates to share this HDP pool? (Choose two.)

A. customer relationship management

B. customer service call taking and dispatch

C. software development

D. backup repository

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.

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

A. perfmon

B. iogen

C. iostat

D. sar

You need to run a benchmark test to verify the performance of a new multi-user database storage implementation before loading the real data.

What are three features you will need in the benchmark/workload generator to accomplish this task? (Choose three.)

A. variation of thread count

B. variation of sequential and random access

C. variation of RAID level

D. variation of HBA queue depth

E. variation of read and write

A user reports fluctuating LUN response times every day between 8:00 AM and 9:00 AM as users arrive and log in.

How do you identify this condition using Hitachi Tuning Manager?

A. View LUN response times and RAID group utilization (% busy) averaged over the 60 minutes.

B. View the random write counts every minute.

C. View LUN response times and RAID group utilization (% busy) every minute.

D. View LUN response times and correlate against the Cache Write Pending level every 15 minutes.

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

What are two benefits of placing transaction log files on RAID 1+0 disks for Microsoft SQL Server databases rather than RAID 5 disks? (Choose two.)

A. Multiple transaction log files are supported.

B. Faster recovery after disk hardware failure is realized.

C. Capacity utilization rates are improved.

D. Microsoft recommendations are followed.

How does the HDLM Extended Round Robin algorithm impact sequential I/O?

A. It continues to use the same path for a user-specified count of sequential I/O requests.

B. It remembers a user-determined number of addresses to better implement sequence detection for the storage.

C. It buffers and reorders I/O requests to improve sequence detection by the storage.

D. It makes a path decision for every I/O request.

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

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

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

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

In a database environment, the system administrator complains that high write response times are triggering frequent automated alerts. However, utilization for processor, paths, and array groups is low. Database users are not complaining.

What causing this problem?

A. The RAID level is inappropriate.

B. The storage system has too few processors.

C. The storage media devices are too slow.

D. Asynchronous destaging of writes occurs in bursts.

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.

For which two purposes is the SVP Performance Monitor suitable? (Choose two.)

A. Reporting by device owner

B. Annual trend analysis

C. Real time observations

D. A reference for verifying the accuracy of other performance tools

For a VSP G1000 system serving a mission critical interactive workload, which two statements are true about VSD failover? (Choose two.)

A. The VSD receiving the workload of a failed VSD is not pre-determined.

B. Providing reserved capacity to accommodate failure is a requirement when planning for capacity for normal operations.

C. The workload of a failed VSD board always transfers to its redundant partner VSD board.

D. The workload of a failed VSD board is dynamically redistributed among surviving VSD boards.

A VSP G1000 customer is concerned about high VSD utilization alerts during their nightly backup and application maintenance window. To address their concerns, you want to inform them about the maximum acceptable utilization level range.

What would be the range in this scenario?

A. 30-40%

B. 40-50%

C. 50-60% D. 80% or higher