After replacing a failed hard drive in a storage array, what is the NEXT step to restore the logical volume?

After replacing a failed hard drive in a storage array, what is the NEXT step to restore the logical volume?

• A. Format the new drive
• B. Rebuild the volume
• C. Expand the storage pool
• D. Replace the RAID controller

Answer: (B)

When a hard drive fails in a storage array and is subsequently replaced, the next critical step to restore the logical volume is to rebuild the volume. This process involves integrating the new drive back into the existing RAID configuration, which allows the data redundancy and fault tolerance characteristics of RAID to be re-established. During the rebuild process, the RAID controller will take the data from the remaining operational drives in the array and copy it onto the new drive. The RAID levels and configuration determine how the data is distributed across the drives, and this step is essential for ensuring that the logical volume is fully operational and all data is accessible after a drive replacement. Simply formatting the new drive prior to the rebuild is unnecessary because the RAID controller will handle the required data restoration to the drive, and expanding the storage pool is typically not relevant immediately after drive replacement unless there is a specific need to increase capacity at that moment. Replacing the RAID controller is also unnecessary unless it has failed or shows symptoms of malfunction, which is not the case in the context of simply replacing a hard drive. Hence, rebuilding the volume is the immediate action to take following the installation of the new hard drive.

When a hard drive fails in a storage array and is subsequently replaced, the next critical step to restore the logical volume is to rebuild the volume. This process involves integrating the new drive back into the existing RAID configuration, which allows the data redundancy and fault tolerance characteristics of RAID to be re-established.

During the rebuild process, the RAID controller will take the data from the remaining operational drives in the array and copy it onto the new drive. The RAID levels and configuration determine how the data is distributed across the drives, and this step is essential for ensuring that the logical volume is fully operational and all data is accessible after a drive replacement.

Simply formatting the new drive prior to the rebuild is unnecessary because the RAID controller will handle the required data restoration to the drive, and expanding the storage pool is typically not relevant immediately after drive replacement unless there is a specific need to increase capacity at that moment. Replacing the RAID controller is also unnecessary unless it has failed or shows symptoms of malfunction, which is not the case in the context of simply replacing a hard drive. Hence, rebuilding the volume is the immediate action to take following the installation of the new hard drive.