Tapes used to be made unavailable if you had a mount in process and the tsm 
proc that requested the tape was cancelled.
len

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of 
Huebschman, George J.
Sent: Friday, February 19, 2010 2:51 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: [ADSM-L] why would volumes be unavailble?

Unavailable tapes of any count would be distressing to me.  That is data
that can not be read.  If they are unavailble due to drives needing
cleaning, they are normally recoverable just by update vol access=reado
(or access=readw).  I used to have to do that...a lot.

If the tape drive can not read the internal label, read the data, or
write to the tape it can be marked unavailable.  That could be a drive
problem (dirty, broken, wearing out) or a media problem.  Check your
actlog for errors related to that tape, or other errors on the same
drive.

select cast(sta.server_name as char(10)) as TSM_SERVER,
date(act.date_time) AS DATE, TIME(ACT.DATE_TIME) AS TIME, message as
"MESSAGE                                                              "
from actlog act, status sta where msgno in
(1163,1401,8300,8311,8359,8381,8778,8779,8792,8873,8943,8944,8963) and
date_time>current_timestamp -1 days
--------------------------------------------------------------------
If you have volumes that are marked UNAVAILABLE you might also want to
check for "Volumes Made Private" to prevent reuse.

Courtesy of W:
select volume_name , status from libvolumes where status='Private' and
volume_name not in (select volume_name from volumes)  and volume_name
not in (select volume_name from volhistory where type not
in('STGNEW','STGREUSE','STGDELETE')  )

George Huebschman
Storage Support Team, Media Librarian
Legg Mason, LMTS
410 580-7911 (office)
410 522-8581 (mobile)

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