This is from past experience:
(I'm sure this is left unsaid, but you never know). Initially you have
to have been backing up the OS filesystems.
Once you install the client, assigned the original IP address, highlight
the 
filesystems you need to restore. 
Once the restore begins, you will be prompted to over-write current
files (DO NOT OVER-WRITE)
If you over-write it will corrupt you system files (not to mension the
ODM entries) and you will have to rebuild. 
after the restore is complete, you should have your original system
back..
regards...

        -----Original Message----- 
        From: Yahya Ilyas 
        Sent: Fri 3/15/2002 11:27 AM 
        To: ADSM-L AT VM.MARIST DOT EDU 
        Cc: 
        Subject: Restore OS of AIX 4.3.3
        
        

        Recently we lost both mirror disks on one of the RS6000,
AIX4.3.3 system.  I
        installed base OS, and TSM client and than restored selected
files on the
        new system.  How can I restore complete OS?
        
        We have TSM server level 4.1.4.
        
        I have done complete restore of an HP system by installing base
OS on first
        disk than installing OS on second disk.  Than I rebooted from
first disk,
        mounted second disk and restored OS on second disk, after
restore was
        complete I rebooted from second disk.  Will this same procedure
work on AIX
        platform.  I am told that on AIX platform after restoring OS on
different
        hdisk system will not boot.
        
        Thanks
        
        
        >       -----
        >       Yahya Ilyas
        >       Systems Programmer Sr
        >       Systems Integration & Management
        >       Information Technology
        >       Arizona State University, Tempe, AZ 85287-0101
        >
        >       yahya.ilyas AT asu DOT edu
        >       Phone: (480) 965-4467
        >
        >