HP-Unix 64 bit Tape Drive creating problem

Hello All,

I have HP Openview storage data protector version 5.5. When I am going to write my backup I have an error message saying "Connot Open Device /dev/rmt/0mn"

Follownig is my output:

# ls -l /dev/rmt/0mn
crw-rw-rw- 2 bin bin 205 0x080140 Jan 17 16:41 /dev/rmt/0mn
# uname -a
HP-UX HPUXSRV B.11.23 U ia64 4122093358 unlimited-user license
#

Any help would be appreciated.

Regards,
Zishan

What does this command:

 mt -t /dev/rmt/0mn status

output?

Is this a new installation?
Was this working before and then stopped working?
Has the tape drive failed and been replaced?

Please post the output from:

ioscan -fnCtape

Please look in this menu for failure messages:
Data Protector/Reporting/Event Log

What do you have in:
Data Protector/Devices & Media/Devices/your_tape_deck