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Hitachi HITACHI DATA SYSTEMS CERTIFIED EXPERT -REPLICATION SOLUTIONS ARCHITECT Sample Questions:

1. A customer is using ShadowImage(SI) on a Virtual Storage Platform (VSP) for a point-intime copy. The SI P-Vol resides in a SAS HDP pool and the SI S-Vol resides in a SATA HDP pool. During resychronization, the VSP cache write pending hits 60 percent utilization in CLPRO.
What are two ways to reduce the resynchronization impact on host performance? (Choose two.)

A) Keep the SI pairs in PAIR state.
B) Run an SI quick split.
C) Run an SI resync during non-peak hours.
D) Put the SI S-Vols in a separate CLPR.

2. A customer implements TrueCopy replication for an active OLTP database and users begin to complain about database response time. The customer is running Fiber Channel over DWDM and the peak write workload only consumes half of the available bandwidth on the link.
Which factor affects the database response time?

A) The distance between the sites introduces too much latency.
B) Insufficient MCU cache has activated inflow control.
C) Cache configurations of the RCU and MCU do not match.
D) The distance between the sites is too great for Fiber Channel to maintain session

3. A customer is planning to replicate 36 TB of data using asynchronous replication. What are two primary considerations for sizing the expected solution? (Choose two.)

A) The percentage of writes for the environment
B) Number of disk units installed at the secondary site
C) Total number of IOPS for the environment
D) The amount of latency between the sites

4. A customer is planning to replicate 36 TB of data using asynchronous replication over 500 miles (805 km) on a VSP.
What are two considerations for sizing the expected solution? (Choose two.)

A) TrueCopy Extended Distance pool size
B) aggregate throughput for parity groups
C) journal disk type
D) number of host storage domains on a host initiator port

5. If write MB/s is unavailable for an application, which three metrics should be used together to determine write throughput? (Choose three.)

A) Read IOPS
B) Link latency
C) Block size
D) Total IOPS
E) Read/write ratio

Solutions: