220-802 · Question #981
220-802 Question #981: Real Exam Question with Answer & Explanation
The correct answer is B: Install 2 new drives; follow RAID recovery instructions, restore the data from last backup.. As with Question 4, RAID 5 can only survive a single drive failure. With two failed drives, the parity mechanism cannot reconstruct the missing data-the array is fully degraded and the data is unrecoverable from the RAID itself. Joe must install two new replacement drives, rebuil
Question
Options
- ARemove and replace the bad drives, one at a time, the RAID will rebuild and recover.
- BInstall 2 new drives; follow RAID recovery instructions, restore the data from last backup.
- CRemove and replace both drives, the RAID will rebuild with data in place.
- DCreate a VM, copy the data from an external drive and remap the shares.
Explanation
As with Question 4, RAID 5 can only survive a single drive failure. With two failed drives, the parity mechanism cannot reconstruct the missing data-the array is fully degraded and the data is unrecoverable from the RAID itself. Joe must install two new replacement drives, rebuild/reinitialize the RAID 5 array following the controller's recovery procedures, and then restore all data from the last known good backup. Replacing drives one at a time will not work because the array is already beyond its fault-tolerance threshold, and the RAID cannot self-rebuild with two drives missing.
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