Ed.Toner AT eu.nabgroup DOT com wrote:

> We fixed this with a firmware upgrade to the 9840 drives.


Are these LTO Gen II drives?


> What caused our hangup was a media error which left a tape with a corrupt
> header (MIR) so it would hang the entire drive next time.  It tries to
> position and then never completes.


That appears to by the same thing that happens to our backups.  The drives get
hung after a Media write error.


> Hitting the reset button on the drive normally unlocked things but we had
> to freeze the media until it's backups expired to stop it being written to.
> Once expired you could write to the start of the tape which resets the MIR
> and the tape is fine after that.

I don't recall seeing a reset button on the drive.  I have to power cycle the
drive, which unlocks the Fibre channel.

Do you bplabel the tape to reset the MIR???

-- 
Dan