Accessive I/O errors and faling backups.

Hi,

since a couple of weeks we get accessive I/O errors on our 3590E drives and
as a result many 'read-only' tapes.
And since a week or so also "Data storage transaction 'blablabla' was
aborted.", i.e. our backup's failed more often and often (lack of empty/
writable tapes or backup's just fade away...)
And btw, it happens on all our drives and with all king of tapes (i.e. old
or brand new).

Anyone seen this before and/or any suggestion?

(ADSM-server 3.1.2.40, AIX 4.2.1.0, Atape.driver 4.4.0.0 en atldd.driver
 4.0.1.0.)

12/13/99   01:30:08  ANR8302E I/O error on drive 3590-0 (/dev/rmt0) (OP=FLUSH,

                      CC=0, KEY=03, ASC=31, ASCQ=00,
                      SENSE=F0.00.03.00.CA.A3.49.58.00.00.00.00.31.00.FE.0A.35-
                      .2D.41.01.00.09.01.31.08.88.CD.4B.F4.0A.10.00.01.33.FC.0-
                      0.00.33.12.01.80.33.36.FF.07.00.00.00.A3.45.00.45.BB.05.-
                      00.00.00.FF.00.00.A3.19.05.00, Description=An
                      undetermined error has occurred).  Refer to Appendix B in
                      the 'Messages' manual for recommended action.
12/13/99   01:30:08  ANR1411W Access mode for volume U00023 now set to
                      "read-only" due to write error.
12/13/99   01:30:08  ANR1181E astxn.c332: Data storage transaction 0:869810381
                      was aborted.
12/13/99   01:30:09  ANR0532W smnode.c1268: Transaction 0:869810381 was aborted
                      for session 5086 for node UNITE (IRIX) .
12/13/99   01:30:09  ANE4952I (Session: 5086, Node: UNITE)  Total number of
                      objects inspected:   28,178
12/13/99   01:30:09  ANE4954I (Session: 5086, Node: UNITE)  Total number of
                      objects backed up:      158
12/13/99   01:30:09  ANE4958I (Session: 5086, Node: UNITE)  Total number of
                      objects updated:          0
12/13/99   01:30:09  ANE4960I (Session: 5086, Node: UNITE)  Total number of
                      objects rebound:          0
12/13/99   01:30:09  ANE4957I (Session: 5086, Node: UNITE)  Total number of
                      objects deleted:         19
12/13/99   01:30:09  ANE4959I (Session: 5086, Node: UNITE)  Total number of
                      objects failed:           0
12/13/99   01:30:09  ANE4961I (Session: 5086, Node: UNITE)  Total number of
                      bytes transferred:    29.82 MB
12/13/99   01:30:09  ANE4963I (Session: 5086, Node: UNITE)  Data transfer time:
                                       276.33 sec
12/13/99   01:30:09  ANE4966I (Session: 5086, Node: UNITE)  Network data
                      transfer rate:          110.52 KB/sec
12/13/99   01:30:09  ANE4967I (Session: 5086, Node: UNITE)  Aggregate data
                      transfer rate:         16.95 KB/sec
12/13/99   01:30:09  ANE4968I (Session: 5086, Node: UNITE)  Objects compressed
                      by:                    0%
12/13/99   01:30:09  ANE4964I (Session: 5086, Node: UNITE)  Elapsed processing
                      time:            00:30:01
12/13/99   01:30:10  ANR2579E Schedule DAILY_UNITE in domain UNITE_DOM for node
                      UNITE failed (return code 4).
12/13/99   01:30:10  ANR0403I Session 5086 ended for node UNITE (IRIX).

Cheers,
Henk ten Have.