ADSM-L

Re: Copypool Reclamation

2003-09-19 15:16:42
Subject: Re: Copypool Reclamation
From: "Ford, Phillip" <phillip.ford AT SPCORP DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Fri, 19 Sep 2003 15:16:17 -0400
Copytape reclamation generally uses copytapes if they are in the library and
not offsite.  If they are offsite then reclaim uses the primary tapes.  I
have seen your problem if the primary tape is marked unavailable for some
reason or is taken out of the library.  It can also fail if the primary tape
has a corrupted file that can not be used.  I set reclaim to 45.  If I can
take two tape and write one then I gain a scratch.  Generally we are tight
on the number of scratches.  I have gone lower but we just end up beating
our selves to death.


--
Phillip Ford
Senior Software Specialist
Corporate Computer Center
Schering-Plough Corp.
(901) 320-4462
(901) 320-4856 FAX
phillip.ford AT spcorp DOT com





-----Original Message-----
From: Mark Bertrand [mailto:Mark.Bertrand AT USUNWIRED DOT COM]
Sent: Friday, September 19, 2003 1:58 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Copypool Reclamation


How does Copypool reclamation work? I mean, the tapes are offsite, so is all
of the reclamation done within the database?

When I start the copypool reclamation with an "upd stg copypool reclaim=50"
it tells me what tapes it is going to perform reclamation on. Everything is
OK, those tapes are offsite and my tapepool tapes are onsite ( I run a
tapepool reclamation separate). I always understood that the process took
place in the database and didn't actual need the tapes directly. This
morning I noticed an anr1081i. 09/19/2003 09:05:05 ANR1040I Space
reclamation started for volume xxxACRLx, storage pool COPYPOOL (process
number 745). 09/19/2003 09:08:14 ANR1081W Space reclamation terminated for
volume xxxACRLx - storage media inaccessible. Help on anr1081w shows that
the tape was unavailable to mount, server waits and retries again, no user
response. Do I have to checkin all tapes on the list for every copypool
reclamation process everyday? Have I been doing it wrong for the last couple
of years? I have read the technical guide and information guide redbooks but
neither had much detail on the subject. I did find out one thing that brings
up another question, to start reclamation, the technical guide state to use
a number between 99 and 50 percent, why cutoff at 50% I have been running at
40% and at times have used 30%? Will the system recognize numbers lower than
50? OK last question on reclamation, is my goal to have the tapes listed
with q vol that have a status of full to have as close to 100% utilized as I
can get them to take full advantage of my library? I appreciate any help you
can give to help me understand reclamation better, even if it is to direct
me to another publication that has the details on this subject. I also tried
search.adsm.org but could not get to it this morning. System TSM Server
5.1.6.3 with DRM, Win 2K. 3584 Library Thanks, Mark Bertrand


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