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Question 54

What is a characteristic of SRDF/Metro?

Data must be stored in cache on both sides before an acknowledgement is sent to the host.

Multiple capture sets permit smaller cycles of data to be buffered on the R1 side and transferred to the R2 side.

A dependent-write consistent copy is maintained between the R1 and R2 devices.

Devices that have the Consistency Exempt attribute set can be controlled independently of the other devices.

Correct Answer: A

A characteristic of SRDF/Metro (Symmetrix Remote Data Facility/Metro) is that it requires data to be stored in cache on both sides before an acknowledgement is sent to the host. This ensures synchronous replication with zero data loss between the two sites by confirming that data has been written to both storage locations.

Discussion

TrinhLKOption: C

possibly C. A dependent-write consistent copy is maintained between the R1 and R2 devices.