[luau] Reccomendations for backup routine/tools

[MonMotha]

I just acquired a couple tape drives (4GB Travan SCSI that I have two 
tapes for and a 10GB Travan IDE that I have too many tapes for to count, 
these are the uncompressed capacities, but anyway...) but I note a lack 
of completeness in GNU tar's backup scripts, so I was looking for any 
reccomendations anyone have on getting a nice semi-automated backup 
system set up (grandfather, father, child maybe, I definately have 
enough tapes...) that would be able to just have me stick the tape in 
the drive and run a command (I can set some of this up obviously, but 
I'm not really a "backup theory" guy).

So, any suggestions?  I'd like to stick with tar if possible as it 
produces semi-standard archives (yes, I know GNU incremental tars aren't 
standard, but anyway), though I'm open to other progs like cpio if 
anyone's had a really great experience with them.

--MonMotha