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тАО04-23-2009 12:20 PM
тАО04-23-2009 12:20 PM
MSL 6000 Sequential Mode
$ DISMOUNT $2$MGAx command is issued from VMS.
Instead, the $2$MGA1 tape drive goes OFF-LINE, and it cannot be accessed until the Tape Library is rebooted.
Can anyone help me with this issue?
Thank you,
Roger
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тАО04-23-2009 12:41 PM
тАО04-23-2009 12:41 PM
Re: MSL 6000 Sequential Mode
I unfortunatelly know nothing about VMS, but this is sequential mode
"Sequential Mode is locally controlled. Sequential operations
begin with any cartridge loaded into Drive 0. The library
monitors the drive status, and when the host unloads a cartridge
from the drive, it returns the cartridge to the magazine, and then
loads the next cartridge in magazine numerical order. This
operation continues until all cartridges have been loaded, or
until an empty slot is encountered. Two options are available:
Normal (same as Library Mode above) and Recirculate. Instead
of stopping after the cartridge in the last slot for the drive has
been unloaded by the host, Recirculate mode continues the
operation by loading the first cartridge for the drive.
Recirculation will continue until an empty slot is encountered, or
the operator unloads the tape using the GUI touch screen."
I think your command does not unload the drive, but only take it offline anyhow - as said, I know nothing.
How about asking the folks in the VMS forum?
This would be the source of your choice!
Hope this helps!
Regards
Torsten.
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тАО04-24-2009 03:36 AM
тАО04-24-2009 03:36 AM
Re: MSL 6000 Sequential Mode
The VMS command $ Dismount $2$MGA1 is supposed to unload the tape cartridge from the tape drive.
In my case it does not.
Is it a hardware problem with the MSL, or is it a Software problem with the MG device driver? I am leaning more toward the hardware being at fault; either due to a configuration setup, or a faulty component.
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тАО04-24-2009 04:38 AM
тАО04-24-2009 04:38 AM
Re: MSL 6000 Sequential Mode
i take it there is no symbol defined for the dismount command that might interfere ?
have you tried explicitly issuing it with the /unload ?
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тАО04-24-2009 04:41 AM
тАО04-24-2009 04:41 AM
Re: MSL 6000 Sequential Mode
what are you managing it with ? mru ?
have you tried the library and tape tools to diagnose any issues ?
http://h18006.www1.hp.com/products/storageworks/ltt/index.html
hth
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тАО04-24-2009 04:49 AM
тАО04-24-2009 04:49 AM
Re: MSL 6000 Sequential Mode
I have determined there are no symbols defined regarding the DISMOUNT command, and I have tried the $DISMOUNT/NOUNLOAD/NOASSIST $2$MGA1
The MSL does not unload the cartridge that is present in the tape drive. I am reasonable certain the tape gets rewound, but not 100% certain the leader gets unthreaded. If I reboot the MSL, I can
$ Mount /for $2$MGA1. The drive mounts, and the tape is positioned at BOT. The cartridge did not change.
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тАО04-24-2009 05:30 AM
тАО04-24-2009 05:30 AM
Re: MSL 6000 Sequential Mode
can the tape be ejected using the front panel options or web interface while '├Г┬│ffline' in vms ?
have you tried doing an io auto from sysman to see if drive comes back ?
do try the /unload qualifier with dismount.
the l & tt stuff should tell you whether there are any issues with the library or drives.
is unload mode set to explicit , it should be implicit by default.
hth
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тАО04-24-2009 06:18 AM
тАО04-24-2009 06:18 AM
Re: MSL 6000 Sequential Mode
but maybe this help a little:
first : dismount is not eject.
a next tape in a set is only selected when a mounted tape is full and more data need to be written to tape.
you may use the "dismount /nounload" version of the command.
then the media will be dismounted, the tape stays in the unit and the drive will stay online, ready for another mount command.
dismount itself defaults to unload
you may need to install the robot- software on the vms-system so you can direct it to load/unload another tape from/to a specific slot or the slot it came from.
Pieter
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тАО04-30-2009 11:30 AM
тАО04-30-2009 11:30 AM
Re: MSL 6000 Sequential Mode
The solution to this problem was to upgrade the Tape drives firmware - two tape drives, two firmware upgrades.
I want to thank everyone that responded.
Roger Provencher
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тАО04-30-2009 11:32 AM
тАО04-30-2009 11:32 AM
Re: MSL 6000 Sequential Mode
The solution was to upgrade the tape drive firmware on both tape drives.
I want to thank everyone that responded.
Roger Provencher