DEC ST506 Interface Adapter Part No 54-17003-01

[Dave McGuire]

On May 16, 2009, at 10:46 AM, Pete Turnbull wrote:
>> Yes, but the VS2000 and RQDX3, if memory serves, use different  
>> interleave factors.  I'm pretty sure the VS2000 formats at 2:1 (or  
>> is it 3:1?) while the RQDX3 is capable of handling 1:1.  This will  
>> reduce data transfer rates on the RQDX3. (which needs all the help  
>> it can get)
>
> RQDX1 and RQDX2 certainly use 3:1, I don't know about VS2000 but it  
> might be the same.  RQDX3 does indeed use 1:1.

   Yup.  I believe the VS2000 uses 2:1, bit it might be 3:1.  I'm  
fairly certain that it's not 1:1.

   That said, though, I've never actually benchmarked a RQDX3- 
formatted drive against a VS2000-formatted drive plugged into an  
RQDX3.  I'm assuming the bottleneck will be the rotational latency  
(and thus would be affected by interleaving) but there may be a  
tighter bottleneck elsewhere.

             -Dave

-- 
Dave McGuire
Port Charlotte, FL