Hi,

I've got a TSM server (TSM 5.1.1.6) running on Windows 2000 and a TSM client 
with a TDP for Notes. The library is a Compaq Storageworks SSL2020. Both 
server, client and library are connected to a SAN.

The library has a status panel with following contents:

Loader: Idle
Drive 0: Ready
Drive 1: Ready

When backups are running (direct to tape) the drive numbers on the status panel 
of the library switch from time to time eg Drive 0 becomes Drive 21 or Drive 60 
and so on. After a while the drive number returns to 0. The same occurs for 
Drive 1, the number switches from time to time as well.

Some time later, the library gets completely stucked and must be restarted.

OK, I would think a hardware problem with the library as well. But some parts 
(drives, controller) were replaced already and the technician is pointing of 
course in the direction of TSM. We'll get a spare library later this week to 
see if the problem still persists.

In Windows, RSM service is disabled. The medium changer in the device manager 
is disabled as well. The TSM device driver starts at boot time. No errors are 
found in the activity log or the Windows event viewer during the switching of 
drive numbers.

Has anybody experienced already a similar problem? Would it be possible that 
TSM makes too many calls to the library and hence is confusing the library?

Thanks in advance for any pointers.

Kurt