We currently backup our department network running Legato networker with 
backup to a raided disk array (advanced file device in their jargon) 
followed by cloning to a Qualstar/SAIT2 tape library.

Our backup needs are increasing and we don't want to buy licenses for 
more file device space or more tape slots. We would like to go with 
Bacula and have no limits.

In fact since SAIT has dead ended and its not clear to me if Bacula 
supports Qualstar, I wonder about an all disk solution.

Under Legato the license restriction artificially keep the "file-device" 
small relative to the tape storage. However, these days disks are 
cheaper than tapes and license free we could afford a lot of disk space.

However, the second feature of the tapes is that if the "file-device" 
fails (even raid fails), we can transparently go to tape. It also 
affords the option of off site copies of the tapes.

Is there any strategy for Bacula that adds the reliability we would lose 
by abandoning the tapes. Perhaps a second redundant array combined with 
some removable drives for off sites?



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