4 Oct
2001
4 Oct
'01
2:17 p.m.
--- Dave McGuire <mcguire(a)neurotica.com> wrote:
On October 3, Ethan Dicks wrote:
Oops... I knew that.
RD31 - ST225
RD32 - ST241-1
Just a nit...the RD32 is an ST251... ...not a -1 model.
I thought that it specifically _was_ the -1. I _think_ I have a DEC-
badged RD-32 (ST-252-1) from a Pro380 VAX 8530 console, but I might
be mistaken. Maybe they got what they could get in later years.
The ST251 had an average access time of 40ms (if
memory serves) and
the ST251-1 was 28.5ms.
That sounds right. Stepper motor vs. voice coil. (The ST-225 was
something horrible like 65ms or more; I used to think seek-time didn't
matter much on a micro, but when I went from 65ms to 28 on my Amiga,
_wow_!)
-ethan
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