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Difficulty: EasyStorage Drives and RAID Array Issues

A user reports that a desktop computer displaying a motherboard RAID notification during startup indicates one of the two drives in a RAID 1 array has failed, leaving the array in a degraded state. Which of the following is the best immediate action for the technician to take to restore redundancy?

  1. Replace the failed drive with a healthy drive of equal or greater capacity and initiate an array rebuild.Answer
  2. B
    Reformat the entire RAID volume in Disk Management to clear bad sectors.
  3. C
    Delete the degraded array configuration in the controller utility and recreate the RAID 1 volume.
  4. D
    Convert the degraded array into a RAID 0 volume to maintain operation on the remaining disk.

Answer

Replace the failed drive with a healthy drive of equal or greater capacity and initiate an array rebuild.
In a RAID 1 array, data is mirrored identically across drives. When one drive fails, the array enters a degraded state but remains operational via the surviving drive. Replacing the faulty drive with a healthy unit of adequate capacity and initiating a rebuild restores data redundancy without data loss.

Step-by-Step Solution

1
Identify the RAID array status and component failure
The RAID 1 mirror is degraded due to a single failed member disk, but the secondary disk still holds a complete copy of the data.
RAID 1 relies on mirroring across two disks to tolerate single-drive failures without data loss.
2
Remove the faulty drive and install an operational replacement disk
The physical hardware failure is resolved by swapping in a working drive of matching or higher capacity.
A replacement drive must be at least as large as the original drive to accommodate the mirrored data structure.
3
Rebuild the RAID 1 array
Data from the functioning disk is copied over to the new disk, restoring array health to normal.
Initiating a rebuild synchronizes the mirror so the array regains fault tolerance.

Key Concept

Handling degraded RAID 1 arrays by replacing failed member disks and rebuilding the mirror rather than destructive reformatting.
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Topics

Storage Drives and RAID Array Issues

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