TSM 5.1.7.1 on AIX 4.3.3 ML10, Fiber Channel HBA, IBM LTO1

We recently upgraded from 4.2.1.7 to 5.1.7.1.  I started seeing the
"unavailable" and "read-only" tapes soon after that.  I haven't done
anything else to determine the issues.  I thought it might be due to dirty
tape drives (recently sent an email to the list regarding that), and
manually forced a clean of all the drives, but that didn't resolved the
problem.





Krzysztof Kus <kkus AT OPTIX DOT PL>
Sent by: "ADSM: Dist Stor Manager" <ADSM-L AT VM.MARIST DOT EDU>
10/14/2003 10:22 AM
Please respond to "ADSM: Dist Stor Manager"


        To:     ADSM-L AT VM.MARIST DOT EDU
        cc:
        Fax to:
        Subject:        I/O errors


Hello!

My configuration is:
p6H0 with AIX 4.3.3 ML 9
TSM 5.1.6.1
HBA 6228
bridge FC<->SCSI 3250
drives HP-Ultrium1

 From time to time randomly I get error messages in errpt ADSM_DD_LOG2.
 From the sense data I can see that the problem is with a medium. In the
TSM actlog there are messages "I/O error...", and the tape is marked as
read-only (I don't include error logs because I want my mail to be read).

I've checked almost everything from tapes, microcode on the drives
through optical fibers to AIX and TSM (there is no errors on the bridge).

Has anybody have similar adventure with TSM? I'm opened for every
suggestions. Next week I'm going to connect my library and drives
directly through the SCSI (this week I strongly suspect the HBA) :)


Regards.

--

--== KKus ==--