ADSM-L

Re: Setting up a tape rotation

1998-09-02 16:38:52
Subject: Re: Setting up a tape rotation
From: Dan Giles <Dan_Giles AT MANULIFE DOT COM>
Date: Wed, 2 Sep 1998 16:38:52 -0400
Boy, I wish I had a dollar (U.S., of course) for everyone who's ask this
question of me.

First, take your traditional concept of tape rotation and throw it out the
window. ADSM works on a continuous incremental scheeme, and you should let
it work this way. You will save both time and $$$ on tapes. If, for some
reason, you do need monthly snapshots (for legal reasons, say), then use
the archive function. Let ADSM handle its own tape rotation using its own
reclamation procedures.

What I am working on here is to get people to think of their RESTORE and DR
requirements. For instance, "I need to restore this directory tree to a
point in time anywherer up to 30 days ago". In this case, I will tell ADSM
to keep an unlimited number of file from this directory tree for up to 30
days.

This probably hasn't helped too much, but hopefully will get you thinking
from another perspective.





From: Roberto Mannella <rmannell AT MANITOULINTRANSPORT DOT COM> on 09/01/98 
11:10
      AM GMT

Please respond to "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>

To:   ADSM-L AT VM.MARIST DOT EDU
cc:    (bcc: ADSM)
Subject:  Setting up a tape rotation




Hello folks:

I'm relatively new to the ADSM world so please bear with what may be a
seemingly stupid question.

I will be running ADSM for OS/400 using a Magstar 3570 tape unit to back up
my Lotus Notes server running on an IPCS.  I would like to set up a daily
tape rotation of DAY1-4, WEEK1-3, and MONTHA-C.

From the documentation I have and some Redbooks I've been reading, I can't
seem to figure out how ADSM implements a tape rotation - best I can figure
is a manual tape library but then a single tape is used until it's full,
then it requests the next tape, etc.

IBM says it can't be done without making volumes available and unavailable.
This would require writing code and is not desirable to have something like
that to maintain.

Any suggestions would be greatly appreciated.

Thanks.

--
8~)
8~)
Roberto
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