We start all of our backups between 9PM and Midnight - we have 39 clients -
our backups finish up before midnight.  Our primary storage pool is a
diskpool.
We then do a backup of our diskpool to the copypool. (around 3AM)
Then do a migration from our diskpool to the tapepool.  5AM
Then a backup storage pool from tapepool to copypool (shouldn't do anything
just a safety net)
DB backup is happening at 7AM.
Our reclaimations happens during the day in the afternoon at 2PM and finish
up by 7 or 8PM.

I'm not sure why you have backups going 24x7 but I would be scared that your
database backup would not be clean and any particular time.

        -----Original Message-----
        From:   Gerald Wichmann [SMTP:gwichman AT ZANTAZ DOT COM]
        Sent:   Wednesday, May 01, 2002 4:55 PM
        To:     ADSM-L AT VM.MARIST DOT EDU
        Subject:        backup stgpool

        Given an environment where you pretty much have constant backups
occurring
        to your TSM server 24x7 (say every 2 hours) and thus to your primary
pools,
        how does this affect copying the data to a copypool?

        i.e. if my TSM server is currently accepting backups from one or
more
        clients and that data is initially going to my diskpool (migrated to
tape as
        the diskpool fills) - now suddenly I kick off a backup stgpool to a
copypool
        from that diskpool. With files continuously coming into the diskpool
will
        that be a problem for my copypool? I understand that perhaps I may
miss some
        of those incoming files and that's a potential issue but it doesn't
concern
        me so long as they're caught in my next backup stgpool command. I'm
just
        thinking out loud what potential problems if any there are with
doing a
        backup stgpool from a primary pool that is currently receiving
files.
        Offhand I can't think of any other then hitting the disks a little
harder
        and maybe not catching some of those incoming files.. also I suppose
if your
        offsite pool has collocation enabled there might be some interesting
        mounting/dismounting happening.

        Gerald Wichmann
        Sr. Systems Development Engineer
        Zantaz, Inc.
        925.598.3099 w
        408.836.9062 c