Just pulled a Vantec 2Tb USB drive off the shelf to use for a backup drive on a physical server. Its' previous application was as a Windows Server Backup drive on a Windows 2008R2 server. The new application is also 2008R2. The drive was not "decommissioned" after the backups on the old server were no longer relevant. That server got virtualized.
When I run Windows Server Backup, the USB drive does not show under available targets for my backup.
The USB drive shows up in File Manager, but prompted me to format before it could be used. I did a quick format - show Properties comes back with the full drive capacity unused, Security shows full control for SYSTEM and Administrators, but I notice no rights are selected for Owner/Creator and access is denied when I attempt to edit logged in as Administrator.
A couple things that shouldn't matter. I say the drive is inaccessible on a new server. Turns out that it's actually the same physical server. It is, however, a clean installation of Windows Server 2008R2, different host name and different roles. The USB 3.0 drive is connected with a 2.0 cable. The 3.0 cable appears to be have been misplaced. I think the only penalty here is speed.