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Exam E20-393 topic 1 question 68 discussion

Actual exam question from Dell's E20-393
Question #: 68
Topic #: 1
[All E20-393 Questions]

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
Show Suggested Answer Hide Answer
Suggested Answer: B 🗳️
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
by SanKishore at May 25, 2020, 4:51 a.m.

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SanKishore
Highly Voted 4 years, 7 months ago
Should be A. Copy back does not occur in Unity. Replaced new disk becomes HS.
upvoted 5 times
...
Asrarpasha
Most Recent 2 years, 2 months ago
Answer is A, no copy back
upvoted 1 times
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Betu
3 years, 10 months ago
"a hot spare is invoked" hence as per RAID data will be rebuild on that disk.
upvoted 1 times
...
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B (20%)
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