mksysb to hot swap hard drive

AIX 4.3.3

I am investigating methods of creating system backups. One method I am investigating is installing a hot swap hard drive and creating a mksysb to that hard drive. Does anyone have any ideas on getting this accomplished? I am thinking that I need a mounted file system from the 2nd hard drive and then do a mksysb to a file on that mounted hard drive. If the first hard drive dies, and I install another one, can I then boot from CD, get the filesystem from the hot swap hard drive mounted and do a restore from the mksysb file? Is this feasible? :confused: