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Zorluk: ZorStorage Drives and RAID Array Issues

A system technician is servicing an enterprise server configured with a hardware RAID 5 array that has generated a 'Degraded' status alert due to a single drive failure. In what chronological sequence should the technician perform the following steps to safely replace the failed drive and restore fault tolerance?

  1. 1Identify the specific faulty drive slot using the RAID management console and drive bay LED status indicators.
  2. 2Verify the presence of a complete current backup of the array volume data.
  3. 3Remove the failed drive from the hot-swap enclosure and install a replacement drive of equal or greater capacity.
  4. 4Assign the new drive to the logical volume or trigger the array rebuild process in the RAID controller interface.
  5. 5Monitor the rebuilding status until the RAID utility reports an Operational/Optimal state.

Cevap

The correct order of operations is: 1) Identify the specific faulty drive slot using the RAID management console and drive bay LED status indicators. 2) Verify the presence of a complete current backup of the array volume data. 3) Remove the failed drive from the hot-swap enclosure and install a replacement drive of equal or greater capacity. 4) Assign the new drive to the logical volume or trigger the array rebuild process in the RAID controller interface. 5) Monitor the rebuilding status until the RAID utility reports an Operational/Optimal state.
The correct procedural order ensures data safety and system integrity. First, identifying the failed drive bay via management software or physical LEDs prevents pulling an operational drive from a degraded array. Second, verifying or making a backup protects against catastrophic data loss if a secondary drive fails during the high-stress rebuild phase. Third, replacing the faulty drive with an appropriately sized spare physically fixes the broken hardware component. Fourth, assigning the new drive or triggering the rebuild in the RAID controller starts parity recalculation. Finally, monitoring the rebuild until completion guarantees that fault tolerance is restored.

Adım Adım Çözüm

1
Diagnose and locate the faulty disk drive.
The technician confirms the exact physical bay location of the failed disk.
Accurate identification prevents accidental removal of a functional drive, which would cause immediate catastrophic failure of a degraded RAID 5 array.
2
Verify or create a full volume data backup.
Critical data is safeguarded prior to heavy hardware rebuild operations.
Rebuilding parity subjects remaining operational disks to extensive read stress, elevating the likelihood of an unrecoverable read error (URE) or secondary drive failure.
3
Perform physical drive replacement.
The defective disk is replaced with a functional drive meeting hardware specifications.
The system requires a compatible, fully functioning disk with equal or greater storage capacity to restore array structure.
4
Initiate RAID array rebuild procedure.
The RAID controller software registers the replacement disk and begins background parity recalculation.
Physical replacement alone does not always start reconstruction unless assigned manually or configured as a hot spare.
5
Confirm complete rebuild and system redundancy.
The storage array status transitions from Degraded back to Optimal.
Ongoing verification ensures parity synchronization completes without error before returning the server to full production use.

Anahtar Kavram

RAID 5 Degraded State Recovery & Sequential Drive Replacement Procedure
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Konular

Storage Drives and RAID Array Issues

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