Hi T-Grace,
Does your backup server exist on a physical server, or as a VM? If a VM , and you have 2 hosts with the autoloader connected to 1, the minute the VM Vmotions, it is going to go offline.
Locally attached devices are not supported in a VM environment like this, especially with VMware ESXi.
Best bet would be to move the backups to a physical server in this case, or look at a cheaper MSL2024 with SAN-attach capabilities.
If not a VM, I would look at installing the latest SP for BEWS 12.5, and then pushing the RAWS agent out again to all the remote servers.
Laters!