I have a server with an LSI Megaraid 9260-4i raid card.
Right now there's 4x 2TB Seagate Constellation ES.3 drives. We need to upgrade it to 4x 4TB Seagate Constellation ES.3 drives.
What I'm planning to do is take a backup image of the server, then shut it down, remove the 4x 2TB disks, install the 4x 4TB disks, and restore from the backup.
If something goes wrong, can we safely assume that we can stick the 4x 2TB disks back into the system in the correct order and get the old array back online? Or does removing the disks permanently destroy the array?