Hitachi Architect-Expert HCE-3700 Questions & Answers

• Question 1:

  You are troubleshooting a potential marginal link in a SAN fabric that you believe is causing a performance problem.

  To troubleshoot this problem, which two actions will allow you to view the detailed port statistics? (Choose two.)

  A. Use the vendor's GUI.

  B. Use the appropriate host command(s).

  C. Use the appropriate switch command(s).

  D. Use SVP Performance Monitor.

  Correct Answer: AC

• Question 2:

  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.

  Correct Answer: BD

• Question 3:

  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

  Correct Answer: AD

• Question 4:

  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.

  Correct Answer: BC

• Question 5:

  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

  Correct Answer: D

• Question 6:

  An experienced system administrator reports near maximum MPB utilization with VSP G400 arrays operating in a GAD pair. Each array is supporting 100K IOPS with a 50% read workload. The MPBs should be capable of supporting more than 200K IOPS with this profile according to the basic array sizing tools.

  Which two statements are correct in this scenario? (Choose two.)

  A. Cache mirroring between the two G400 arrays generates an extra MPB load which is not recorded in Hitachi Tuning Manager.

  B. Each G400 array is also processing 50K duplex write IOPS from the other G400.

  C. The duplex GAD writes are changing the overall read/write I/O profile and the extra parity operations are causing the high MPB utilization.

  D. The internal array queue management scheme for GAD write operations causes MPB utilization to be doubled.

  Correct Answer: BD

• Question 7:

  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.

  Correct Answer: BC

• Question 8:

  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

  Correct Answer: BC

• Question 9:

  A high level of writes to external storage is backing up into a VSP G1000 cache, creating a high write pending problem that is affecting other workloads.

  Which three actions will help to minimize this problem? (Choose three.)

  A. Add more cache to the enterprise storage system.

  B. Add more cache in the external storage.

  C. Quarantine the LUNs in a separate cache partition.

  D. Set Cache Mode to "Disabled" for the external LUNs.

  E. Address the throughput constraints in the external storage.

  Correct Answer: ABD

• Question 10:

  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

  Correct Answer: A