Spansos - you actually could use the Advanced Open File Option to backup the open databases - give it a go, see how you go, also don't just back up the files, do a restore onto a recovery server as well to make sure it works.
Brian - FYI - Backing up open SQL databases does work with BE 9.0, but it is not recommended.
The reason it would work is because the AOFO on 9.0 snaps all the drives on the server at the same time - so if you have logs on 1 drive, the db on another it will take the snapshot at the same time, allowing good backups.
The drawback with this is - when you need to restore the db or logs, you have to shutdown the SQL services to do so - kinda like a flat file backup.
backing up open SQL databases with the 8.6 OFO was never supported as the snapshot at the drives happened at different times.
All that being said, it is much better to use the SQL agent to the backups, as it uses SQL commands(yep just like the SQL inbuilt backup) to take the backup and restore.
Hope this helps
---cheers
shirmal