Tape Drive - IO Error

[Beard, Russell]

Just upgraded from ADSM 3.1 to TSM 4.1 on an AIX server.

I can't get the drives on line.  I execute the command:

update drive pdc2_stklib acs0 device=/dev/mt0

and I get:  ANR8420E
An I/O error occurred while accessing drive ACS0.

I have gone to Smit, and re-generated the devices, /dev/mt0 ... mt3.

Any ideas?

Rusty Beard
Charles Schwab and Co.