Hi Richard ,
yes the drives  are not available to both AIX and tivoli ,
              when i am trying to reconfigure them
 by cfgmgr comand , gives following error.


lsdev: 0514-521 Cannot find information in the predefined device
        configuration database for the customized device mt0.
lsdev: 0514-521 Cannot find information in the predefined device
        configuration database for the customized device mt1.
rmt0 Available 10-60-00-5,0 SCSI 4mm Tape Drive
mt0  Available 20-60-00-3,0 N/A
mt1  Available 20-60-00-4,0 N/A

what i am thinking is to remove mt0 and mt1  and then run cfgmgr , also opening
call with IBM

thanks
Shekhar




"DDA.RFC-822=ADSM-L AT VM.MARIST DOT EDU/P=Internet/A= /C=us" on 11/17/2000 
09:59:45 AM
Please respond to "DDA.RFC-822=ADSM-L AT VM.MARIST DOT EDU/P=Internet/A= /C=us" 
@ X400
To: "DDA.RFC-822=ADSM-L AT VM.MARIST DOT EDU/P=Internet/A= /C=us"@X400
cc:

Subject: Re: Upgrade

>When upgrading from 3.7.2 to 3.7.4 it gave Following  messages
>i am using ACSLS 5.3.0. seems to be drive related error.
>
...
>
>lsdev: 0514-521 Cannot find information in the predefined device
>        configuration database for the customized device mt0.

This AIX message is obliquely saying that the device driver is not installed
for the device.  Go into SMIT and have a look around.
The classic problem with 'mt' devices is that they are the *SM name for
devices which are also known to the operating system as 'rmt' devices;
and if the operating system goes at them first, it gets them and in effect
takes then away from *SM.
     Richard Sims, BU