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<SNIP> This is how SAVCHGOBJ is designed to work. You do a full save on
tape BR0291. You do a SAVCHGOBJ on the next day and the only objects
that changed were A, B, C on BR0484 On the day after the SAVCHGOBJ gets
C, X, Y on BR0119. So now, to do a full save of all the objects you will
need all three tapes.<SNIP>

That's not how I understand it, nor how I've done backups since we got
our first System/38. (I know...SAVCHGOBJ probably doesn't go back that
far, but still). The default for the REFDATE parameter on SAVCHGOBJ is
*SAVLIB, which means AFAIK, that unless you change this value to
yesterday's date on every daily save, it will save every object that has
changed since you last did a SAVLIB on that object's library. Therefore,
in your example, objects A, B, C, X and Y would all get saved on the
second day. Therefore to do a full restore (I assume that is what you
meant), you would need only tapes BR0291 and BR0119. Now, one caveat of
all the preceding is that I know nothing about BRMS and am only taking
about what happens when using the raw IBM commands.

Trevor Briggs
Analyst/Programmer
Lincare, Inc.
(727) 431-1246
TBriggs2@xxxxxxxxxxx

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of rob@xxxxxxxxx
Sent: Thursday, April 24, 2014 5:27 PM
To: Midrange Systems Technical Discussion
Subject: Re: comfort level in not performing TAPE backups...


Rob Berendt

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