>I discovered something: I created a very big disk pool, I stopped backing up to
>tape and wento disks : my backups are running at 27GBytes/Hour, which is very
>good on a 100mb network. If I make my backup go to my SCSI library connected on
>the SAN via a SAN Data Gateway, the performances are bad again.  So, I have to
>focus on my SAN configuration. The problem is between the TSM Server and the
>library.

It may be the technology characteristics of your drives.  Refer back to Wanda's
2/19 posting about "backhitch" - in which case your "disk buffer" is excellent
compensation.

  Richard Sims, BU