I have a customer who has a Windows 2003 Server with an external HP Storage Works DAT160 USB drive connected. It is running Symantec Backup Exec 12.5 Rev 2213. In the Job log, it is not doing any of the nightly backups - it refers to the error: Physical Volume Library Drive Not Available - V79-57344-33036. If I look under devices, it shows HP1 as offline, I can put it back online but after it starts to do a backup, it goes offline and throws the error. This is a new customer of mine so not sure what the history is nor do they know if they have a support contract thru Symantec. I have worked with Symantec Backup Exec in the past and trying to track down a simliar error but not sure where to go with this one.