If all your clients and the server are on the SP2, then you can do your
backups over the high speed switch.  That's preferable for us than using our
connections to the mainframe, which aren't real speedy.  Also, if you're
considering using a vendor (like Comdisco) to provide a hot site for
disaster recovery of your SP2 and your backups are all on your mainframe, it
might be more difficult to perform the recovery (and tests) than if all
parts are on the SP2.
 ----------
From: Steve Fletcher
To: ADSM-L AT VM.MARIST DOT EDU
Subject: SP2 versus ES9000
Date: Tuesday, March 25, 1997 8:31AM


We are in the planning stage of our ADSM implentation.  Currently, ADSM is
installed on an SP2 which is connected to a 3490 tape controller via SCSI,
shared by our mainframe (CMOS 9672).  Switching the tape system between
platforms is a manual process performed by an operator. Our initial intent
is to use ADSM to back our Unix servers and possibly our increasing number
of NT servers.

QUESTION:  What would be the advantages / disadvantages of running the ADSM
on the SP2 versus installing/running it from our mainframe?

Thanks!
Steve Fletcher
Giant of Maryland, Inc.