A miniscribe from that time would be in a dying condition. If it works, back it up immediately. But expect it to die soon; like a car of that age, its not just the engine or interior but also the wheel bearings and other small things that can make or break the car. For the Miniscribe - its bearing should be failing soon.

And its hard or expensive to find a SCSI drive for it. SCSI2SD would be a great option, I say.