Be carefull with the UPD DRIVE command and 3494 libraries. There is an APAR
(can't remember the number) that if you DO NOT supply the DEV= parameter on
the UPD DRIVE command, it will make that drive unavailable until you either
delete/define it again, or stop/start TSM. If you do a SHOW LIBRARY you
should see a section under each drive like:

349X-specific fields:
  devNo=5329216, isScsi=1
  last dismounted volume

If you don't, ya got bit! I did. Right now my CE is pissed at me. I had him
checking out the drives, SCSI cables, library, and it turned out to be a
software problem. I won't hear the end of this one! :-)

I would do a Q DRIVE to see what TSM thinks the status is, then a SHOW
LIBRARY to make sure all the information is there. Check the activity log
for any message and check out the recommendations from Richard Simms in his
reply.

Bill Boyer
DSS, Inc.


-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED]]On Behalf Of
Talafous, John G.
Sent: Monday, February 26, 2001 3:19 PM
To: [EMAIL PROTECTED]
Subject: Re: Excessive mount failures on 3494 ATL


Bob,
  Have you queried your drives? Try the "q drive" command to be sure the
drives show online. Then, quickly check out the 'UPD DRIVE libname drivename
ONLINE=YES' command if they are not.

Hope this helps,
John G. Talafous              IS Technical Principal
The Timken Company            Global Software Support
P.O. Box 6927                 Data Management
1835 Dueber Ave. S.W.         Phone: (330)-471-3390
Canton, Ohio USA  44706-0927  Fax  : (330)-471-4034
[EMAIL PROTECTED]           http://www.timken.com


-----Original Message-----
From: Brazner, Bob [mailto:[EMAIL PROTECTED]]
Sent: Monday, February 26, 2001 2:56 PM
To: [EMAIL PROTECTED]
Subject: Excessive mount failures on 3494 ATL


We recently upgraded from ADSM 3.1.2.20 to TSM 4.1.2.0 on AIX 4.3.3 with
3494 ATL.   Shortly after the upgrade, we started to experience a situation
where the ATL is "refusing" nearly all mount requests, even though
sufficient drives are available.  The message is "ANR8447E no drives are
currently available in library".  Scratch mounts as well as volser mounts
are failing.  The IBM CE says the service log on the 3494 shows no
indication of a mount being requested.  Occasionally, a mount is satisfied
so we're actually able to perform some amount of productive work.  The
devclass is defined as mountl=drives.  The 3494 is not shared.

Bob Brazner
Johnson Controls, Inc.
(414) 524-2570

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