The Virt-Manager Storage Disks Fedora 18 host.

[Frank Murphy]

I have 5 physical disks, on which the virt-images are stored.

What I have found is for whatever reason, I need to put a new
disk or disk-controller card into the host machine.

It can changes the order of the disks as seen by the host.
So vm's may not start as the physical disk they are on eg: /dev/sdd
is now /dev/sdf or or /dev/sdc

What can I do to protect myself from this in the future.

-- 
Regards,
Frank
http//www.frankly3d.com