I'm trying to figure out what is the best approach to backup, zimbra's backup...

We use Tivoli in a Disk to Disk to Tape. We are trying to backup only the /opt/zimbra/backup tree, but are having issues with:

* each backup creates a new directory
* way too many files, and the backup server has a hard time indexing new files
* after a month, backups get deleted from zimbra, and we have more issues with un-indexing

How are you guys handling this ? If I would just ignore zimbra's backup, and 'do it myself' what should we backup and how about restoring ?

Of course, we want to do this 'online' and not 'offline'...

TIA...