On Tue, Jun 13, 2006 at 02:46:31PM +0200, Toralf Lund wrote:
> >
> Normally I would agree, but I have to back up 3Tb of data organised as 
> one single volume. The only "simple" option would be to have one 3Tb 
> tape as well, but such a thing isn't available (to me at least.)

Toralf,
perhaps I'm being dense, but why isn't your situation satisfied by
the current tape-spanning.  I'm envisioning something like lto-2
or lto-3 drives and using no holding disk but sufficient buffer
space.  If your data compresses to say 1.6TB with the 400GB lto-3
tapes, a setting of runtapes 5 or 6 will accept an entire level 0
dump with only part of the final tape wasted.  On incremental dumps,
amanda would use only as many tapes as necessary.  Again, only the
final tape would have wasted space.


-- 
Jon H. LaBadie                  jon AT jgcomp DOT com
 JG Computing
 4455 Province Line Road        (609) 252-0159
 Princeton, NJ  08540-4322      (609) 683-7220 (fax)