Craig Dewick wrote:

> thefinn <thefinn@tpg.com.au> writes:
>
>
>>How can I add scsi2 or better hard drives to a sparc 20?
>
>
> You can add one internally, but it needs to be a 1" high (ie. low-profile)
> drive to fit in the bays. You'll also need one of the special plastic
> mounting frames.
>
> The other alternative, if you want internal mounting is make up a way to
> mount a drive in the CD-ROM drive bay and connect it to the 50-pin CD-ROM
> data cable using an 80 pin to 50 pin adaptor or 68 to 50 pin adaptor
> depending whether the target drive has an 80 or 68 pin SCSI interface
> connector.
>
> It's not an ideal method but if you don't have any of the special mounting
> frames and you can't (or don't) want the drive mounted externally, it's the
> only other viable option.

Assuming one has mounting frames (or can jury-rig - I made a couple
using bits of perspex from the surplus store), what's the fastest drive
an SS20 can actually utilise? I assume anything with an STR over 40Mb/s
would be wasted, or is it 20Mb/s?

While I'm here, how much difference do Ross 200Mhz processors make to an
SS20? Could I expect performance equivalent to a 360Mhz Ultra 5 if I
installed two? Four? Any reason to prefer the twin processor boards over
singles, aside from the twins consuming an SBUS slot?

TIA

>
> Regards,
>
> Craig.