A couple of questions first. What kind and how many tape drives are you
migrating to? What kind of disk are you using and how is it attached? I
have a seen a few sites with SSA disk pools and multiple 3590 tape drives
with a backups over a 100meg ethernet connection where migration from disk
to tape would happen at the same time as backups to disk with no problems
at all.  Even with multiple migrations over the course of a backup. The key
point is whether the process of moving data from the diskpool to tape is
faster than data moving from the client node to the diskpool. If disk -->
tape is faster than client --> disk then I don't see a huge problem.

Most of the time in this type of situation the bottleneck is the network
not the disk or the tape.

As always ymmv.

At 01:14 PM 6/21/01 -0500, you wrote:

I have a 56GB disk pool with the next pool to tape.  I have a user, DB2
Admin, that wants to back up a 125GB DB2 backup.  What's the best way to
handle this one user?  If he/she backs up the file will it crash the system
because it's bigger that the diskpool, or will it go right to tape?

Sam Schrage
TRW Systems
sam.schrage AT trw DOT com

Chris Gibes <gibes AT berbee DOT com>
Berbee- Milwaukee Branch
N14 W23822 Stone Ridge Dr.
Waukesha, WI 53188
(262) 521-5616


Berbee...putting the E in business