Did you check to make sure the drive is securely tightened down...
I had a 3494 that the little screws to tighten the drive's slide rails would
be loose and as the gripper would come forward to grab the tape, rather than
the tape going into the gripper, it would push the tape drive back just a
bit... enough to not let the gripper properly grab the tape and then rather
than pulling the tape out of the drive, the gripper would just slip off.

Something to check anyway.

Dwight

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Prather, Wanda
Sent: Tuesday, January 25, 2011 2:14 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: [ADSM-L] 3494 tape dismount problem

TSM 5.5.2 on Windows
3494 classic (aka "old") tape library with TCP/IP connection for the robot,
four fibre-connected 3592-E05 drives.

A couple of times a week, a tape gets left in drive 4; always that drive,
different cartridges.
I say "left" instead of "stuck", as there are no dismount errors in TSM, no
FID codes on the drive.
The CE has replaced the drive twice, so it isn't the drive mechanism.
Firmware on library and drives is up to date.
Can't be the software drivers, as it only affects the 1 drive.

Sequence of events is below;
No dismount error, but subsequent mounts fail because there is a tape in the
drive.

Am I correct that since the ANR8468I indicates a successful dismount, TSM
must have gotten a "dismount completed" message back from the library over
TCP/IP? If so that leaves the problem in the robotics, and eliminates any
issues with the HBA or fibre cables...

What say you classic 3494 owners out there?

Sequence of events:

01/14/2011 18:31:09   ANR8337I 3592 volume B01141 mounted in drive DRIVE4
                       (\\.\Tape0). (SESSION: 55830, PROCESS: 1958)
...
01/14/2011 18:44:15   ANR8336I Verifying label of 3592 volume B01141 in
drive
                       DRIVE4 (\\.\Tape0). (SESSION: 55830, PROCESS: 1958)
01/14/2011 18:45:33   ANR8468I 3592 volume B01141 dismounted from drive
DRIVE4
                       (\\.\Tape0) in library 3592LIB. (SESSION: 55830,
PROCESS:
                       1958)
...
01/14/2011 20:30:40   ANR8381E 3592 volume B00752 could not be mounted in
drive
                       DRIVE4 (\\.\Tape0). (PROCESS: 1960)

We've also seen:
01/15/2011 00:43:46   ANR8749E Library order sequence check on library
3592LIB.
                       (PROCESS: 1963)


Wanda Prather  |  Senior Technical Specialist  |
wprather AT icfi DOT com<mailto:wprather AT icfi DOT com>  |
www.jasi.com<www.jasi.com%20>
ICF Jacob & Sundstrom  | 401 E. Pratt St, Suite 2214, Baltimore, MD 21202 |
410.539.1135