Hi
We have a consistent problem of DAT tape drives (TLZ06) failing to
read or write to tapes. The systems are DEC alpha 3500S (built in
tape drives) running DU3.0/3.2.
When the tape drives where new, they were fine. However, over a
period of use (a year or so) they begin to produce media errors, and
make DAT tapes unreadable. We run a procedure of cleaning the tape
drives every second use, and renewing cleaning tapes regularly.
Eventually, the tape drives get so bad that once they have written
information to a new tape, that tape is even unreadable!
Every media failure the binary error log produces the event listed at
the end of this message. Has anyone had similarly problems, and could
suggest a cause? It seems unusual that we should need to replace *all*
our tape drives only after a year of use?
Any information would be appreciated.
thanks
Andrew Gillies
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Andrew Gillies e-mail anaru_at_cns.ed.ac.uk
Centre for Cognitive Science anaru_at_cogsci.ed.ac.uk
& Centre for Neural Systems
2 Buccleuch Place phone 0131 650 1000 ext 4408
Edinburgh EH8 9LW fax 0131 650 6626
-----------------------------------------------------------------
----- EVENT INFORMATION -----
EVENT CLASS ERROR EVENT
OS EVENT TYPE 199. CAM SCSI
SEQUENCE NUMBER 9.
OPERATING SYSTEM DEC OSF/1
OCCURRED/LOGGED ON Wed Feb 14 10:27:00 1996
OCCURRED ON SYSTEM zorro
SYSTEM ID xFFBC0004 CPU TYPE: DEC 3000
SYSTYPE x00000000
----- UNIT INFORMATION -----
CLASS x0001 TAPE
SUBSYSTEM x0000 DISK
BUS # x0000
x0028 LUN x0
TARGET x5
Received on Wed Feb 14 1996 - 12:19:41 NZDT