On 2017-12-12 02:20, Rich Alderson wrote:
From: Johnny Billquist <b...@softjar.se>
Date: Tue, 12 Dec 2017 01:01:11 +0100
So I would assume it at least performs similar to a real RP07, which is
nice. Seek times will obviously almost always be better on todays disks.
As long as transfer rates are acceptable, then this is a very
interesting improvement.
We don't run any antique spinning rust on the timeshared systems these days.
You're so modern. :-)
Me thinking right now if this wouldn't be a nice project for
Magica.Update.UU.SE (PDP-11/70 running RSX). The RA73 disks are really
the slow part of that system, compared to a system I have at home with
SCSI disks. We certainly have RH70 adapters just sitting there, and for
the 11/70, this could be a serious improvement in performance compared
to an UDA-50.
Well, our 11/70 (running 7th Edition Unix) has an MDE attached, so it is proven
to work with an RH70 as well as RH11s, RH10s, and RH20s. I keep looking for a
round tuit so that I can arrange to test it against the RH780 in the 11/785.
(We don't have a /750, so I can't test it against an RH750. Somebody asked.)
Thing is, I'm not particularly interested in faking an RP06, or even
RP07. Going from a bunch of 2G drives to something a few hundred megs is
not attractive. Which is why I was curious about the RM06, since that
would allow for actual large drives on a Massbus, which would make it
really nice.
(And when are you going to set up a nice 11/70 running RSX and hooked to
the internet and HECnet, hum? ;-) )
Johnny
--
Johnny Billquist || "I'm on a bus
|| on a psychedelic trip
email: b...@softjar.se || Reading murder books
pdp is alive! || tryin' to stay hip" - B. Idol
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