I have a little egg on my face - when I gave you my original response I had
forgotten about the ADSM reuse delay, and was thinking of the TMS feature.
In that scenario, the extra time TMS buys you is useless, since ADSM wouldn't
know about the tapes at that point.

There was another post yesterday about volumes in a "pending" status that
explains the reuse delay logic very well.

I think the point of the STGD and STGN records is just to be able to rebuild
your DB if you have to do a forward recovery.  Certainly, if you can only go
back 6 days maximum for that recovery, then keeping the records longer than
that is a waste of DASD space, especially when you consider what happens to a
tape once it is returned to TMS.  When we do the Del VOLH command, we specify
"all", and not just DB tapes for deletion.  As it is, we have over 6000
entries in the file.

Sorry for the confusion I caused.


Jerry Lawson
jlawson AT thehartford DOT com


______________________________ Forward Header __________________________________
Subject: Re: VOLH Question
Author:  INTERNET.OWNERAD at SNADGATE
Date:    5/14/97 4:32 PM


Item Subject: VOLH Question
        We do back-to-back full backups every day (the first being the
     offsite copy).  We then do incrementals every 1-2 hours depending on
     time of day.
        We define all tapes as non-expiring to TLMS and do a DEL VOLH
     TOD=TODAY-3 TYPE=DBB every day.  The reuse parameter is also 3 days.
     Due to the sheer volume of tapes, we didn't see any reason to keep any
     more than 3 days worth of tapes in "limbo".  I'm not sure what you are
     getting at with the suggestion of 6 days.  Could you elaborate?
        It seems, after looking at this, that the STGD and STGN records are
     pretty useless if you are using an external tape library manager under
     MVS.  Is that a fair statement?
        Thanks for your response.


______________________________ Reply Separator _________________________________

Subject: VOLH Question
Author:  jlawson
Date:    5/13/97 11:00 PM