We've seen the same behaviour with HP LTO drives, and yes unless something is 
really fouled, resetting the drive from the GUI or CLI and then UP'ing the 
drive usually cure the problem.  NB uses will "DOWN" drives as a feature and 
this can be configured as to how many errors are required before a drive will 
be down'd.  A lot of our media write errors were really FC/SCSI path errors, 
keep that in mind if your drive are not direct connected to the media server.

Patrick Wilhelm
Davidson College - ITS
704-894-2569
pawilhelm AT davidson DOT edu


-----Original Message-----
From: WEAVER, Simon [mailto:Simon.WEAVER AT astrium-space DOT com]
Sent: Monday, September 23, 2002 12:38 PM
To: 'Karunanidhi Subramanian'
Cc: 'Veritas-bu AT mailman.eng.auburn DOT edu'
Subject: RE: [Veritas-bu] Media write errors !


Karun
In my experience, when we got media write errors, our drive would be in a
"down state" in the Netbackup Device Manager window.

Usually performing a manual eject and placing the drive in an UP state cured
it, however, I also changed over to HP LTO Tapes and so far (fingers
crossed) we have been running very well indeed!

Simon Weaver
NT Domain Administrator
Ext. 5544
Tel: 02392-705544 (Direct Dial)
Simon.Weaver AT Astrium-Space DOT com

-----Original Message-----
From: Karunanidhi Subramanian [mailto:karunanidhis AT hotmail DOT com]
Sent: 23 September 2002 05:23:PM
To: Veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] Media write errors !

Hi Folks !
I have a IBM Ultrium 3584 tape library with 8 drives with Netbackup
Datacenter 3.4 on a Solaris 8 server. The problem I am facing is, whenever
there is a media write error, the drives go down and I can see SCSI timeout
errors on the syslog of the media server. And the tape gets struck in the
drive. It looks like it is not able to eject the tape. I would assume media
write errors should not cause the drives to go down.

Any idea ?
Thanks,
- Karun



_________________________________________________________________
Chat with friends online, try MSN Messenger: http://messenger.msn.com

_______________________________________________
Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
...
This email is for the intended addressee only.
If you have received it in error then you must not use, retain, disseminate
or otherwise deal with it.  Please notify the sender by return email.
The views of the author may not necessarily constitute the views of Astrium 
Limited.
Nothing in this email shall bind Astrium Limited in any contract or obligation.

Astrium Limited, Registered in England and Wales No. 2449259
Registered Office: Gunnels Wood Road, Stevenage, Hertfordshire, SG1 2AS, England
_______________________________________________
Veritas-bu maillist  -  Veritas-bu AT mailman.eng.auburn DOT edu
http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu