https://commons.wikimedia.org/wiki/File:Sun_2-50_RAM-SCSI.JPG is a picture of the memory expansion and sun2 vme scsi. note that it had a rtc on it. 2/50 cpu https://commons.wikimedia.org/wiki/File:Sun_2-50_Processor.JPG
there was a sun 3 made up of 6u vme cards (the 3E) ebay 222132890021 has pictures of the ethernet/scsi card which uses an intel ethernet and 5380 scsi like the 3/160
3/60 switched to AMD LANCE for ethernet. earlier machines all used intel
sun 2 ethernet was originally a 3com 3c400 then their own intel 82586 board
sun 2 scsi connected to an adaptec 4000 mfm controller or a sysgen qic02 tape controller. i think later proms could boot from a sun3 scsi 'shoebox'
there was also a hideously dumb multibus qic02 controller
for 9 track and smd, most sun2 systems and early sun3s used xylogics 47x multibus cards (in vme-multibus adapters on sun3)
i wonder if a HLE scsi framework makes sense for all of the tape and disks where you could describe what parts of the common command set and the unique identifiers could be described, with a mechanism to talk to a physical disk or tape drive. I was thinking of this for the 440x simulation as well
