A customer has a single array group with three SAS disk drivers in a RAID 5 configuration.
Which method should the customer use, with the least risk, to protect their data volume in
case of a drive failure?
A.
migrate the RAID 5 array group to RAID 6
B.
configure a hot spare
C.
configure RAID 1 ADM
D.
add more drives to the RAID 5 group
The answer is B from the Dump.
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group with three SAS disk drivers – only configure RAID 1 ADM
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It is RAID 1 ADM. RAID 1 ADM works with 3 disks and can sustain a drive failure. RAID 10 ADM mirrors two sets of 3 disks and can sustain a double drive failure.
Migrate to raid 6 = requires a 4th disk. (not an option listed)
Configure a hot spare = requires a 4th disk, or you have to change to raid 1 (not an option listed)
Add more drives to the RAID 5 group = no additional protection is offered by doing this, you must change the raid level or configure a spare to accomplish it (not an option listed)
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Page 100 of Study Book.
I think “C”
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