[Info-vax] DLT drives and antique SCSI compatibility

[Bill Gunshannon]

On 7/14/20 12:58 PM, Stephen Hoffman wrote:
> 

> DEC wasn't too fond of SCSI back then and for various reasons, including 
> both technical and business reasons.
> 
> KZQSA was itself very limited in what was supported on the SCSI bus.
> 
> Similar restrictions for the DEC 2000 / DECpc AXP 150 / Jensen Adaptec 
> SCSI permissible configurations.
> 
> And the Q-bus boards and drivers I was working on then ran afoul of the 
> KFQSA, but that's DSSI and not SCSI, and the KFQSA is all fodder for 
> another discussion.
> 
> For various at DEC, DSSI was preferred to SCSI as it was multi-host and 
> multi-initiator capable, viewed as better-specification, and was 
> DEC-proprietary hardware, etc.
> 

I remember reading somewhere (back in the days when I was actually
using DSSI) that DSSI was considered SCSI done right.  At least in
DEC circles.

bill