Thanks to evryone for helping......
I was having a lot of problem defining the library.
I finally got it going since it needed a different LUN address.
Now, I have to define the storage pool and so on.
Any other hints will be welcome.

----------
> From: Michael Richard <Michael_Richard AT COMPUWARE DOT COM>
> From: Michael Richard <Michael_Richard AT COMPUWARE DOT COM>
> To: ADSM-L AT VM.MARIST DOT EDU
> Subject: Re: configure dlt4(boxhill's) drive to rs/6000,adsm
> Date: Thursday, August 20, 1998 2:55 PM
>
>      to define the library the command you used
>          define library dlt4lib libtype=scsi device=/dev/mt0
>      should be
>          define library dlt4lib libtype=scsi device=/dev/lb0
>      make sure that before you do this in adsm that you go into smit in
AIX
>      and in devices then in ADSM DEVICES define up the library to get the
>      /dev/lb0
>
>      The drives use /dev/mt# and the library uses /dev/lb#
>
>
>      >Please help me configure the drive since I am having problems
>      >configuring the same.
>      >I used the follwing definiton to define my library and it fails:
>      >define library dlt4lib libtype=scsi device=/dev/mt0
>      >
>      >Any tips will be appreciated.
>      >
>      >Madhu Gandhi
>      >Prodigy Services, Inc
>      >Unix Systems Administrator
>      >madhug AT prodigy DOT net
>      >(o)914-448-1748
>      >pager: 914-972-7417
>      .