You may be able to prove in the negative:
If you know which storage pool the node's data would be in, you can get
a list of the tapes in that pool now.
If you loop through all the tapes in that pool, and check volhist, and
they've all been newly added (via reclaim) since the date of the
filespace deletes, then no data should be retrievable without a time
machine.
Whether there is any data to go back for depends on things like reuse
delay, and how much reclaim you do.
[RC]
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
RAYMOND J RAMIREZ RAMIREZ
Sent: Tuesday, April 07, 2009 11:07 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] TSM database information
Hello to all,
I have a special situation.
In February I moved an AIX client from our old TSM 5.2 server to add it
to our newer TSM 5.4 server, then I deleted the file spaces that
belonged to this client and removed the client from the old server. Now
the users want to recover old files that was on the AIX client before I
moved it and deleted the file spaces. I know I can restore the database
to the point before the deletion, but I need to be sure that the files
can be recovered before attempting this. Everything was backed up on IBM
3590 cartridges in a large IBM library, and I have a tape management
report that identifies all the TSM database tapes as available, as all
of the data tapes, too.
But I also need to know which of the 4,000+ data tapes has the files I
need. I need a method to read the TSM database tape file without
restoring it, and in reading it, I wish to know which are the data tapes
with the files I need. If the tapes are available (since reclamation and
reuse could have destroyed the original files), then I will restore the
database tape, and run TSM to recover the requested files. But if most
or all of the tapes were reused (the tape management system can verify
this), then I can be sure that the data is lost and I would not have to
do the TSM database restore.
It may sound confusing, but it is like knowing if there is fish in a
lake before travelling toward the lake to catch fish.I am open to any
and all suggestions and recommendations.
Raymond J. Ramirez, P.E.
Distributed Systems Supervisor
ITS Operations and Infrastructure
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