DLT TAPE CLEANING PROBLEMS WITH ADSM

Hello  *SMers,



We are rumming ADSM server version 3, release 1 level 2.50 on a AIX RS/6000
machine.
The library  used is a STK9710, with 6 DLT 7000 drives.
The cleaning facility of the robot has been disabled.
In ADSM the cleaning frequency has been set to a triggerlevel of  500 GB.
Two Cleaning tapes are always checked-in in the library, and each contains,
if new, a capacity of 20 cleanings according the vendor, (QUANTUM) and are
checked-in with the number of cleanings as such.

Now the problem is that depending on a for us unknow situation the cleaning
commence to fail with still a certain number of cleanings left on the
cleaning tape. This number may be differend  as we have seen problems with
tapes which had 3 to 7 cleanings left ...
As there are still cleanings left according the ADSM  database...... the
system will no switch to the next cleaning cartridge and will produce the
error,


09/08/00   06:47:19      ANR8914I Drive DRIVE5 (/dev/mt4) in library STK9710
needs
                          to be cleaned.
09/08/00   06:49:08      ANR8906I Cleaning drive DRIVE5 (/dev/mt4) in
library
                          STK9710.
09/08/00   06:54:37      ANR8469E Dismount of CLEANER volume CLN003 from
drive
                          DRIVE5 (/dev/mt4) in library STK9710 failed.
09/08/00   06:54:37      ANR8907E CLEAN DRIVE for drive DRIVE5 (/dev/mt4) in
                          library STK9710 failed.


Notice that the cleaning cartridge has 6 cleanings left and nevertheless
produces a failure.



09/08/00   08:00:01      ANR2017I Administrator ADMIN issued command: QUERY
ACTLOG
                          begint=now-24:00 search=clean


ANS8000I Server command: 'q libv stk9710 cln003 f=d'

Library Name     Volume Name     Status                Last Use      Home
Element
------------     -----------     -----------------     ---------     -------
-----     ------------------
-----     ------------------
STK9710          CLN003          Cleaner                             2
STK9710          CLN003          Cleaner                             2
6 Cleanings Left



Is there any solution for this problem ?

Your help would be very welcome.

Best regards,

Johan Moreels