[Info-vax] Unix on A DEC Vax?

[Bob Koehler]

In article <alt24lFaeb7U1 at mid.individual.net>, billg999 at cs.uofs.edu (Bill Gunshannon) writes:
>  
> Or just put a SCSI QBus module in and dump the DSSI entirely. (Don't
> get me wrong, I ran DSSI on my 4000's and thought they were great. 
> But, unfortunately, the rest of the world just chose to ignore DSSI
> which I once heard described as "SCSI done right".)

   Many 4000 series VAXen have DSSI on the motherboard, which could
   offer faster performance than Qbus.  DSSI to SCSI can be a better
   solution than Qbus to SCSI.

   I specifially threw out some Qbus SCSI disks on a VAX 4000 Model 505
   in favor of attaching new SCSI via DSSI in order to solidify an 
   application that was doing hard real-time over the Qbus.  Ran great 
   when there was basically nothing else on the Qbus.