Yes.  We are seeing these also.
I do not know where the problem lies - in hardware or in ADSM.
We have tried replacing drives, cleaning drives, etc.
We are still on ADSM v2.  I don't know if this problem might have been
corrected in v3.  Perhaps someone else knows.
Our drives have recent firmware on them, so that is not the problem.
We have ATL folks looking at this, but so far they have only suggested
replacing hardware (drives).  I suspect this may be an interaction problem
between ADSM and DLT drives.

..Paul
--
At 05:49 PM 10/30/98 +0100, you wrote:
At 05:49 PM 10/30/98 +0100, you wrote:
>Dear Adsmers,
>
>Is anyone aware of I/O errors on DLT7000 ?
>please see below the description , and the answer of   Quantum technical
>support.
>my question on the DLT tape Forum:
>We currently use adsm V3 with STK9714, 4 DLT drives.
>      Since a month we are experiencing problems with
>      I/O operations, on several tapes, with several
>      drives.
>      These drives never ask to be cleaned (There is a cleaning
>      cartridge inside the library. We did a clean from the
>      library control panel, but we are still having these errors
>      ( that cancels our move data process)
>      Sample of log error:
>      10/26/1998 22:14:00  ANR8302E I/O error on drive DLT1 (MT1.0.0.2)
>(OP=LOCATE,
>                            CC=306, KEY=03, ASC=11, ASCQ=00,
>
>
>SENSE=F0.00.03.00.00.EA.16.16.00.06.9C.7A.11.00.00.00.00-
>                            .00.81.00.F9.00.00.9A.50.00.5D.78.A0.,
>Description=Drive
>                            or media failure).
>      10/25/1998 09:00:00  ANR8302E I/O error on drive DLT0 (MT0.0.0.2)
>(OP=READ,
>                            CC=408, KEY=03, ASC=80, ASCQ=01,
>
>
>SENSE=F0.00.03.00.00.00.00.16.00.04.AB.A3.80.01.00.00.00-
>                            .00.81.00.F9.00.00.9A.50.00.6D.F4.8D.,
>Description=Clean
>                            the media and the drive).
>      10/09/1998 09:46:51  ANR8302E I/O error on drive DLT0 (MT0.0.0.2)
>(OP=LOCATE,
>                            CC=205, KEY=FF, ASC=FF, ASCQ=FF, SENSE=**NONE**,
>
>                            Description=SCSI adapter failure).
>
>        ***************************************
>> RE: DLT7000 Media Failure
>>      By Dick Stone() on 10/29/98 11:56:06 AM
>>
>>      There are ADSM events suggesting a problem with DLT7000 that we are
>> investigating. Currently, the situation is not lending itself clearly to
>> the location of problem. Your situation seems to be exhibiting the same
>> characteristics but right now we don't have a solution. If you're in
>> position to make more observations, we would be interested hearing about
>> additional behavior you have noticed.
>        *****************************************
>
>        Thanx for any information
>        regards
>        David Blondeau
>