Sorry, I should have said an RK05 on an 11/34 or /44 (or even the original /20); I did not mean to imply/have that sentence parsed to mean that RK05's were not on the QBUS.
My point was there were a number of Unibus RT-11 systems sold that ran on the RK05's and that if you were trying to get the an experience of what many users had, that would be where I would start. Certainly that matched my own experience in school and in industry. By the time of the rise of the QBUS systems, I had personally stopped using RT-11 and I would have expected most people to be using newer technology, if only for cost per bit reasons. I know I was using newer storage technologies on my Vaxen and later Unix workstations. That DEC and customers put RK05's on QBUS is not a surprise if only because that was a popular technology, although the price/bit by then was in favor of MFM/ESDI and eventually SCSI technologies. On the other hand, IIRC there were aftermarket controllers for QBUS by then that used the newer technologies and I would have expected people running RT-11 to want to use them if nothing else for space reasons [RK05 was a 19" rackmount technology, where as the MFM/EDSI/SCSI disks had moved to 5 1/4"]. On Wed, Feb 17, 2016 at 10:36 AM, Alan Frisbie <[email protected]> wrote: > On 02/17/2016 05:43 AM, Clem Cole wrote: > > That said, if you used RK05's you certainly would be building a >> > > simulated Unibus system that was close to what many people had. > > Not necessarily. Don't forget the RKV11-D Q-Bus controller for > RK05 disks. I have one here, with both an RK05J (removable) > and an RK05F (fixed). I used it with my original LSI-11 before > finally upgrading to an 11/73. I usually use them to run RT-11, > but have booted the RSX-11M v2.0 RK05 on it. > > Alan Frisbie > > _______________________________________________ > Simh mailing list > [email protected] > http://mailman.trailing-edge.com/mailman/listinfo/simh >
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