I have gotten the killed/rollback problem more than once and researched it a bunch.  The first thing you need to see is if the rollback is complete.  It probably is. ...

Definitely your backups are too slow. Fifteen hours isn't practical.

For one of my database servers I backup about 100 GB with Backup Exec to DLT in about...

I use an ActiveX script to script and save all SQL objects. It uses SQL DMO script method. It is run from a job that runs nightly. ...