A technician is servicing a server configured with a hardware RAID 5 storage array where a single hard drive has failed, leaving the volume operating in a degraded state. Arrange the standard recovery steps in the correct sequential order from first step to last step.
- 1Identify the exact physical location of the failed disk using the RAID controller management console and drive bay LEDs.
- 2Verify or execute a complete system data backup prior to hardware intervention.
- 3Unlatch and remove the failed drive from its hot-swap bay and insert a functional replacement drive of equal or greater capacity.
- 4Initiate the array rebuild process through the hardware RAID management interface.
- 5Monitor the rebuild progress until the RAID management status returns to Optimal.
Answer
The correct sequence for recovering the degraded RAID 5 array is: 1) Identify the physical location of the failed disk, 2) Verify or execute a system data backup, 3) Remove the failed drive and insert a compatible replacement, 4) Initiate the array rebuild process, and 5) Monitor the rebuild progress until the status returns to Optimal.
The standard recovery procedure starts by identifying the specific failed physical disk to prevent removing an active disk. Next, performing or verifying a backup guards against catastrophic data loss if another disk fails while fault tolerance is down. After securing backups, hot-swapping the bad drive with a compatible unit prepares the array for data reconstruction. Initiating the rebuild recalculates parity data across the remaining drives onto the new disk. Finally, monitoring the array until its health status shows Optimal verifies that redundancy has been completely restored.
Step-by-Step Solution
Key Concept
RAID 5 Degraded Array Drive Replacement Sequence