Here is the background info: I have a tape library with 10 slots (9-8mm data tapes & 1 - cleaning tape). The app is backupExec 10.0 for Windows servers. I have the library partitioned into 5 partitions and tapes assigned to 4 different media sets. The problem for me is that if I do a big job, veritas may write to several different tapes as it see fit and it really messes me up in keeping track of what's what with what data is on what tape. I wish I could just assign tapes to media sets and that would be that. I have plenty of storage space for the jobs and I can't help but think that it would be a lot "easier" to do it the way that I want. Currently, it will write the data on an differential tape if it likes even though there is space on a full media set tape because it shows that the tape is locked for some reason. I hope this is understandable. The overwrite and append periods are set pretty low, and in fact to "always appendable" on some tapes and the app seems to disregard the settings to write to some other tape outside of the media set. This is very, very frustrating. I have been on the phone with tech support many times and the off-shore technicians, while obviously very brilliant, seem to have a one-track mind and agenda and provide a quick-fix without long term solutions to the wandering backups. Not only that, but sometimes the backup won't be done because the tapes are seemingly locked.