Hitachi HCE-3700 Value Pack (Frequently Bought Together)

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 server virtualization will change the I/O profile of the application as viewed by the storage.
• 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 cache hit percentage is determined primarily by the amount of cache provided by the storage system.
• 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.

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. The duplex GAD writes are changing the overall read/write I/O profile and the extra parity operations are causing the high MPB utilization.
• B. The internal array queue management scheme for GAD write operations causes MPB utilization to be doubled.
• C. Cache mirroring between the two G400 arrays generates an extra MPB load which is not recorded in Hitachi Tuning Manager.
• D. Each G400 array is also processing 50K duplex write IOPS from the other G400.

A customer using a small block interactive workload on a VSP G200 complains about poor application performance. They use an FC SAN which consists of 8 Gbps and 16 Gbps FC switches.
What are two causes of the performance issue? (Choose two.)

• A. The multi-pathing software uses round robin balancing algorithm.
• B. The host HBA has an insufficient queue depth setting.
• C. The front-end FC ports are used by another bandwidth-intensive application.
• D. Front-end ports of the VSP G200 are connected to the 8 Gbps FC switch.

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. backup repository
• B. customer service call taking and dispatch
• C. software development
• D. customer relationship management

A customer with a VSP G1000 is using HDT with SAS 15K drives and external storage. The customer wants the daytime response-sensitive workload to benefit from tiering. They also want to minimize the impact of relocations on the daytime operation itself.
In this scenario, which action will satisfy the requirements?

• A. Enable monitoring only during the daytime hours (9:00 AM to 5:00 PM) and only enable relocation at other times.
• B. Use continuous mode with a 30-minute cycle time and define relocation during daytime hours (9:00 AM to 5:00 PM) with a low relocation speed.
• C. Disable monitoring during daytime hours (9:00 AM to 5:00 PM)
• D. Enable active flash so that all relocations can be completed in short bursts.