[Greg-Mega]

Initially we were replacing a failed drive in the OS array in the server however during the raid rebuild the other drive started showing I/O issues and the rebuild failed, there are two RAID arrays in this server a RAID 1 array with 2 drives for the OS and a RAID 10 array with 8 drives for the virtual servers.

We did first attempt to bring the server back online with 1 drive running the OS so we could then migrate all the VM's to another server however due to the I/O issues the drive was sitting in 'read' only so we couldn't restart the virtual servers. The fasted solution at the time was two move the drives to another server that we had on standby so the decision was made to do this around 2am.

By Ijan - Posted on Whirlpool