CompTIA A+ Core 1 (220-1001) — Question 11

A systems administrator receives a notification from the RAID controller that the RAID 5 array is degraded. Upon logging into the server, the administrator sees that on logical disk 0, physical disk 2 has failed. Which of the following is the BEST course of action to take to resolve the problem?

Answer options

• A. Schedule system downtime and replace physical disk 2. Wait until the array is rebuilt and confirm in the RAID controller that the system is no longer degraded.
• B. Immediately replace physical disk 2. Wait until the array is rebuilt and confirm in the RAID controller that the system is no longer degraded.
• C. Delete logical disk 0 and manually configure a new RAID array only using the known-good working drives. Wait until the array is rebuilt and confirm in the RAID controller that the system is no longer degraded.
• D. In the controller, convert the RAID 5 array to RAID 0 array to avoid system downtime. Wait until the array is rebuilt and confirm in the RAID controller that the system is no longer degraded.

Correct answer: A

Explanation

The best course of action is to schedule system downtime and replace the failed physical disk 2, as it ensures that the RAID array can rebuild without risking data loss. Immediately replacing the disk might lead to complications if other issues arise. Deleting logical disk 0 would result in data loss, and converting the RAID 5 to RAID 0 compromises data redundancy, which is not advisable.