DDS4 Internal Tape drive + AIX 5.3 not working...

OK, I have seen that 2 other people are having the exact same problem as me...

I cannot do a tctl -f /dev/rmt0 reset

mksysb returns:

0512-017 mksysb: Cannot write to the device /dev/rmt0.
                           Either write protected or in use.

Please help.

Many thanks,

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gheistConnect With a Mentor Commented:
install lsof from and look for database system that holds tape open.
Basically non-IBM hardware are not guaranteed to work.
If you install Linux that will start to work magically.
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rondegAuthor Commented:

This is an IBM branded drive.

I have run a diag -a on the drive and all of a sudden it works until I reboot the server and then it is right back where is started.

I have rebuild the server and the problem remains.

Any other ideas?

Many thanks for everyone's efforts so far!
Upgrade mainboard (or all) microcode, so it accepts newer drives.
rondegAuthor Commented:
All code is up to date.

The drive is still in the same condition.

Any other thoughts?
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