How long will a Copy Back operation take when a hot spare is invoked?

How long will a Copy Back operation take when a hot spare is invoked?
A . Pro-Active hot spare does not use a Copy Back operation
B . Copy Back time depends on the RAID type
C . Copy Back time depends on the disk capacity
D . Copy Back time depends on the disk type

Answer: B

Explanation:

Note: Starting with Release 24, you can now use a proactive hot spare for proactive disk replacement.

Before Release 24 you had to remove the physical disk to replace in order to force a rebuild. During the rebuild phase, the RAID group was "degraded" and at risk.

Resolution:

Three main benefits of using a proactive hot spare:

– Avoiding "uncorrectable errors" due to media problems during the rebuild process.

– Greatly reduce the risk of having a degraded RAID group, and the risk of having a double-faulted RAID group.

– Performance – a copy to hot spare is faster than a normal rebuild.

References: https://community.emc.com/docs/DOC-9419