I administer two sbs2008 servers in different companies. Recently both of them have started having intermittent problems with the sbs backup. In both cases we have 2 usb drives which are changed weekly. What we are seeing is that sometimes the backup succeeds several times, and then part way through the week it fails because the drive cannot be found. In every case, the drive is still connected, but cannot be seen in the Disk Management window.
Is this a common problem?