[Info-vax] danger from HVD SCSI

[Michael Kraemer]

In article <kridnSujD46o5UzRnZ2dnUVZ_qSdnZ2d at giganews.com>, "Richard B. Gilbert"
<rgilbert88 at comcast.net> writes:
> On 11/3/2010 4:15 AM, Michael Kraemer wrote:

> > Even worse, the vendors didn't seem to care to clearly
> > identify their HVD host adapters.
> >
> 
> What's in it for them???
> 
> Every time a customer screws up they sell replacement hardware.

At some point I suspect that too.
The VAXstation's SCSI outlets with the wrong (male) gender comes to mind.
In contrast to the classical CN50 connectors it's relatively easy
to ruin one (or more) of those HD pins. If that happens with a SCSI cable
it's relatively cheap to get a no-name replacement.
If it happens with VS's SCSI, you'd have to call field service and/or
get a replacement/repair of the entire SCSI part,
which certainly results in more income for DEC.

>  I 
> recall being handed a DLT tape drive and being told to connect it to the 
> SCSI bus.  Which I did.  As I recall, we smoked both the drive and the 
> controller.  Somebody had ordered the right kind of drives which was 
> some single ended/LVD and some HVD.  This information was not shared 
> with the front line troops with the predictable results.
> 
> 
>