> 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. > 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.) Rich _______________________________________________ Simh mailing list Simh@trailing-edge.com http://mailman.trailing-edge.com/mailman/listinfo/simh