Re: how to recover unexpired data from tapes with errors

Another option, if you have a copy storage pool, is to issue a RESTORE
VOLUME.
ADSM will reload the data to another volume in your primary pool by
reading it from your copy pool volumes, and then mark the old tape as
DESTROYED for you.

That may or may not be convenient for you, depending on whether you
store your copy pool volumes down the hall or in another county!  It
also takes longer than a MOVE DATA.

What I usually do is run the MOVE DATA, and let ADSM move as much of the
data off the volume as possible.
If there is any data that can't be moved due to the bad spot on the
tape, then I use  RESTORE VOLUME to get the rest.


===================================================================
Wanda Prather
Johns Hopkins Applied Physics Lab
301-953-6000 X8769
wanda_prather AT jhuapl DOT edu

"Intelligence has much less practical application than you'd think."
              - Scott Adams/Dilbert
===================================================================






        ----------
        From:   Steven P Roder[SMTP:tkssteve AT acsu.buffalo DOT edu]
        Sent:   Wednesday, November 19, 1997 3:44 PM
        To:     ADSM-L AT vm.marist DOT edu
        Subject:        Re: how to recover  unexpired data from tapes
with errors

        On Wed, 19 Nov 1997, Susan McClure wrote:
        > I think I know how to do this but thought I would double check
with the guru's.
        > I have a tape that got a write error during an ADSM backup so
ADSM marked it
        > read-only and moved on to the next tape.  The bad tape
obviously still has 'some'
        > good and unexpired data on it.  Before I trash the tape, do I
do a 'move data' command
        > and move all unexpired data from the bad tape to a new one??
        > Or is there another way to get the good, unexpired data off
the tape.... other than waiting
        > for it all to expire ?

        Those are your two options.  Issue 'move data vsn', and then
replace the
        tape.  The other option would risk the tape being used in
reclaimation,
        becoming scratch, and being used again before being replaced.

        Steve (unVMix Systems Programmer/Dude) Roder
        (tkssteve AT ubvm.cc.buffalo DOT edu | tkssteve AT acsu.buffalo DOT edu 
|
(716)645-3564 ,
           | http://ubvm.cc.buffalo.edu/~tkssteve)