You probably don't need those part numbers. If you don't need a 24x7
you might not need the original IBM disks. I have been using several
different seagate and quantum 9.1 GB SCSI disks on several 43p-1x0 for
years without problems. Works as Other SCSI disk. Two things that come
to my mind: presupposition is that the disks must support spin up on
command. However all the seagates/quantums I use do support this so
probably all disks today do so. Secondly you might need to find out
queue_depth and q_type for reasons of performance. (Try to get
datasheet from the manufacturer).
However keep in mind that 'normal' SCSI disks might not be suitable to
run 24x7 because of recalibration issues. So don't use those disks with
your database production server.