I'm currently using Windows Backup on Windows 2003 to backup my data to LTO tape. It actually works quite well but its *very* basic and the scheduling is a bit cumbersome.
I've tried other software in the past and it's either way too complicated for what I need (e.g.: BackupExec) or it doesn't support "spanning" over multiple tapes (yes! I actually tried software which terminated the backup when it got to the end of the tape, rather than asking for the next one).
What does everyone else use? Ideally it should be free, but I know I'm limiting myself when it comes to tape backup software. It needs to run on Windows 2003 and ideally support software and hardware encryption.
How about backing up to a hard drive, then using scheduled task to call 7z to compress and encrypt them, then call multipar2 to create parity recovery and segment the archive files? Then, using whatever simple tape backup tool to dump everything to your LTO and delete them from disk.
It's an option, however I'd need to come up with a lot of disk space (which I don't have). I'm looking at 10TB+ worth of data.