December 23, 2015

Expanding a RAID 5 Volume on a XenServer 5.6 Server: Part 1 of 2

This post briefly describes my recent experience of expanding a RAID 5 array on a server running XenServer 5.6.

The server originally had  3, 500 GB drives set up in RAID 5 and was about 90% full. The server had room for one more drive so another 500 GB drive was added.

The RAID controller is an Intel RAID Controller SROMBSASMR running firmware version 1.41.372-2527.

After the new drive was installed the RAID BIOS Console recognized it as an unconfigured drive.

To add the drive to the existing drive group and expand the array, use the Migration with addition option.

After you confirm you want to perform this operation, the reconstruction process starts. This took about 10 hours to complete.

When the reconstruction was complete, the new drive was successfully added to the RAID 5 array.

The server was rebooted and the next step was to enable XenServer to see the additional storage space. See part 2 for more information.

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