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220-802 · Question #321

A user is running a RAID 0 array and has problems with one of the drives. Which of the following actions will the technician take NEXT?

The correct answer is C. Replace the drive; all the data is lost and cannot be recovered. RAID 0 uses disk striping with no redundancy or parity, so a single drive failure destroys all data in the array with no possibility of recovery.

Hardware and network troubleshooting

Question

A user is running a RAID 0 array and has problems with one of the drives. Which of the following actions will the technician take NEXT?

Options

  • AReplace the failing drive and let the RAID recover.
  • BAdd an additional drive to the array and let the RAID recover.
  • CReplace the drive; all the data is lost and cannot be recovered.
  • DRemap the RAID array to another drive letter to recover the data.

How the community answered

(40 responses)
  • A
    5% (2)
  • B
    3% (1)
  • C
    85% (34)
  • D
    8% (3)

Why each option

RAID 0 uses disk striping with no redundancy or parity, so a single drive failure destroys all data in the array with no possibility of recovery.

AReplace the failing drive and let the RAID recover.

RAID 0 has no fault tolerance or self-healing capability - replacing the drive does not allow the array to rebuild because there is no redundant data to recover from.

BAdd an additional drive to the array and let the RAID recover.

Adding a drive cannot reconstruct the lost striped data since RAID 0 stores no parity or mirrored copies.

CReplace the drive; all the data is lost and cannot be recovered.Correct

RAID 0 stripes data across multiple drives in segments, meaning each file's data is physically distributed across all drives in the array. There is no redundancy, mirroring, or parity - if any one drive fails, the stripes that resided on that drive are permanently lost, and since files span drives, the entire dataset becomes unreadable and unrecoverable. The technician must replace the drive and restore all data from a backup.

DRemap the RAID array to another drive letter to recover the data.

Remapping a drive letter is an OS-level operation that cannot reconstruct data that no longer physically exists on the remaining drives.

Concept tested: RAID 0 striping - no fault tolerance, total data loss on failure

Source: https://learn.microsoft.com/en-us/windows-server/storage/storage-spaces/storage-spaces-fault-tolerance

Topics

#RAID 0#data loss#drive failure#RAID recovery

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