NeXT slab questions

I'm just about to stick an OS on the newly-acquired NeXT Slab (thanks to local Freecycle list for providing, and Witchy for picking it up!) Questions: CDROM - do I need a 2048 bytes/sector one or 512 bytes/sector? (I have both available, but it just saves me guessing the type!) SCSI bus - in order to hang a (terminated, obviously) CDROM off the external SCSI connector, do I need to enable/disable termination on the system board somewhere, and/or enable/disable termination on the internal drive? (I'm not sure if the internal drive is one end of the SCSI bus, or just a short spur off the bus) Memory - Can these things take more than 32MB? Purely curious - I don't even know if such a thing as an 8MB 30 pin SIMM exists (this Slab currently has 8 x 4MB modules in it) (I did get manuals with this, but they're right at the bottom of everything else that's in the car!) cheers Jules