One of the two disks in my RAID1 array is starting to act up a bit and so I thought I would consider replacing it before it actually experiences a hard failure. While I'm doing this can I upgrade the size of the disk to something larger? Currently there are two 250G drives. I would like to end up with two 750G drives in a RAID1 array. This is a Gateway desktop system with a ICH7R/DH controller and Windows 7.
I think that I understand this well enough to know that I can't do this directly by just replacing the drives one at a time and rebuilding the array each time. I have an additional open bay in my case. Can someone tell me if this approach would succeed?
First, remove one of the two drives and allow the array to run with only one drive.
Install two new drives in the case
Reboot the system and create a new RAID1 array using only the two new drives
Restore a complete backup of the data on the original RAID array (including OS) from a server on my network
Delete the original RAID1 array
If this seems overly tortured and there's an easier way, I'm always ready and willing to go with easy.