Hi Richard,

There is only one device class configured on this TSM Server....

             Device Class Name: LTOCLASS1
        Device Access Strategy: Sequential
            Storage Pool Count: 4
                   Device Type: LTO
                        Format: ULTRIUM3C
         Est/Max Capacity (MB):
                   Mount Limit: DRIVES
              Mount Wait (min): 60
         Mount Retention (min): 60
                  Label Prefix: ADSM
                  Drive Letter:
                       Library: LTOLIB1
                     Directory:
                   Server Name:
                  Retry Period:
                Retry Interval:
                      Twosided:
                        Shared:
            High-level Address:
              Minimum Capacity:
                          WORM: No
              Drive Encryption: Allow
               Scaled Capacity:
Last Update by (administrator): ADMIN
         Last Update Date/Time: 01/06/2009 08:52:42



The Technote you mentioned....I guess it doesn´t help me as it is about a 
Virtual Library.....this is a IBM TS3100 Library...the Management Console shows 
the following information:

LIBRARY IBM 3573-TL
DRIVE LTO ULT3580-TD3


Also...about this volser mode...how do I check if it is 6 or 8...and how do I 
change it, if needed?

Thanks

Mario






________________________________
From: Richard Sims <rbs AT BU DOT EDU>
To: ADSM-L AT VM.MARIST DOT EDU
Sent: Thu, February 25, 2010 9:32:29 AM
Subject: Re: ANR9999D error mounting tape

We don't have the context on whether this has been working for you and
then stopped working, or whether you are trying something new, or
whether this is a problem with other types of operations on tape in
that library, or may be isolated to specific cartridges in that library.

I'd start by checking the device class assigned to your TSM db
backups, and assure that the drive type is consistent with the "L3"
tape at issue.  You can take a look at Technote 1303094 to see if that
pertains.  We don't know your library type, but possibly it is
configured such that it's operating in a 6-char volser mode rather
than 8, so the L3 is not being conveyed to TSM for media type to be
known.

   Richard Sims