MicroVax II

On 08/02/2016 19:49, Douglas Taylor wrote: That's unfortunate. The DEC badged drives would be ideal, but you should be good with Sun-, HP- or SGI-badged drives, or Plextor and Toshiba drives with a SCSI interface. For the non-workstation vendors, search up the model spec sheets to see if you need to change a jumper or, in unusual cases, cut a trace on the PCB. All this info can be found on (third-party) CD-ROM FAQs for the workstation vendors... The 68/80 to 50 pin adapters are straightforward and all over eBay. Be advised that some drives spec'd for Ultra 320 may need a jumper or simply won't behave properly on an 8-bit SCSI bus, but its doesn't seem to be that common. If you're looking for spinning iron, I'd recommend drives using the 80 pin SCA connectors. Checking the labels is best, but as a rule of thumb they tend to be more recent production. However all of them are getting long in the tooth! For physical drives, most recently I've been getting the 2.5" Seagate Savvio drives with the SCA connectors. They tend to "only" be ~10 years old, and the smaller form factor often makes it easier to squeeze them and the coverter board into drive carriers designed for 3.5" devices. Be aware that if you don't know your equipment uses High Voltage Differential (HVD) SCSI, avoid it or things that just say "Differential." It will fry older/slower and Low Voltage Differential (LVD) SCSI gear. Sorry if any/all of that was already known, but I'm avoiding actual work this evening. ;) --S.