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тАО09-15-2008 08:34 PM
тАО09-15-2008 08:34 PM
ESL9000 tape drive problem
During the backup , the drives seemingly go offline due path disconnects and have to abort the batch job that runs the backup and restart.
1. The batch job issues a mount request for second volume
2. I mount a free volume through MDMS and reply to the request with mounted
3. Job keeps repeating the request
4. Log file says "medium is offline " When I check the drive, it shows disconnected paths
Questions :
What am I doing wrong ?
Is it possible to set the path and not use multipath
We are on VMS 8.3 on GS1280.
Please see the attached text file.
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тАО09-15-2008 10:44 PM
тАО09-15-2008 10:44 PM
Re: ESL9000 tape drive problem
failover between direct and MSCP-served paths is not supported for tape devices (unlike multipath failover between direct and MSCP-served paths for SCSI and Fibre Channel disks introduced in this release).
fwiw
Wim
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тАО09-16-2008 03:06 AM
тАО09-16-2008 03:06 AM
Re: ESL9000 tape drive problem
http://h20000.www2.hp.com/bc/docs/support/SupportManual/c00775232/c00775232.pdf
says that ETLA drives don't support mult-path failover (search for etla). That's in contrast with all docs saying that VMS can handle it starting from 7.3-1.
Confusing
Wim
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тАО09-23-2008 11:36 AM
тАО09-23-2008 11:36 AM
Re: ESL9000 tape drive problem
set device/noenable/path=xyz device:
Would this work for tape device ? Are there any other issues that may crop up. Perhaps I can set this before starting the backup and then enable it after the backup is completed.
( from VMS help )
SET
DEVICE
/ENABLE
/ENABLE
/NOENABLE
Enables or disables a path to a multipath device; the affected
path is the one named in the /PATH qualifier. All paths are
initially enabled; the current path cannot be disabled.
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тАО09-23-2008 12:10 PM
тАО09-23-2008 12:10 PM
Re: ESL9000 tape drive problem
Is it possible that there are other hosts on the SAN that are accessing the library, which could be causing VMS to confused ??
Cheers,
Rob