I am doing the same thing now (Sungarde too).
But I am not restore AIX, because before we restore DB it is impossible
(except using other media or tar which required more daily operation).
1. install AIX
2. install library
2  install TSM
3  follow your DRMPLAN (Which is part of your DRM) copy Devconfig,
dsmserv.opt and volhist files,
4. do dsmfmt -db and dsmfmt -log (make sure the db size and log size)
5. dsmserv restore devc=devclass_name vol=vol_name1,vol_name_2 commit=yes
6. then you can restore the AIX.


George