Can't really speak for DFS, but using buta with AFS has gone
quite well.  It also allows you to define mgmt classes, so you
can do neat things like dump to a disk stgpool first, have a
copypool for the data, and ADSM will manage all of the tapes.

Pat Wilson
paw AT dartmouth DOT edu


>  Hi All,
>
>  AIX 4.2.1
>  DFS/DCE 2.1
>  We are thinking of using the ADSM DFS client for backups of our DFS data to
>  3570 tape unit. At present we use the butc program to write directly to the
>  3570. This backup takes longer than expected. We changed to a 3570 thinking
>  this would give us faster writes but we haven't noticed a lot of
>  difference. If we change the block size of the tape device the backup fails
>  so we have left block size set to 0. Perhaps someone knows of a setting we
>  should be changing within DFS.
>  I read that the DFS ADSM agent replaces the butc program with the buta
>  program. Does this speed things up??
>  Basically I'm looking for any recommendations that using this ADSM client
>  is superior to the way we are doing it at present.
>
>  Thanks
>  Craig