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@REPLYADDR Dave McGuire <mcguire@lssmuseum.org>
@REPLYTO 2:5075/128 Dave McGuire
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On 9/29/23 18:21, Rich Alderson wrote:
> We emulated two kinds of drives:
>
> 1. Large Massbus drives (RP06 and RP07), because media for either type was
> unavaiable. The last disk manufacturer in the US shipped us a batch of
> "RP06" packs which were unformattable, because they had changed the
> chemistry of the slurry.
I wish you had contacted us; we have some RP06 packs that we`d have
been happy to share with you.
>>> Keeping old disk drives running is much harder than old CPUs.
>
>> It is, but we do it at LSSM. It`s not like it`s impossible.
>
> We kept RK05, RM02, RM03, and RL01 drives running for smaller
DEC equipment, as
> well as the drives on the Altos. It`s not impossible, but it wasn`t our
> primary raison d`etre...
>
> NB: I received training from a former DEC FE in how to install and tune heads
> in an RP06--without the magic suitcase, just a torque wrench. So
don`t tell me
> what is and isn`t doable.
Exactly. Those drives are comparatively easy to maintain, parts are
findable, and the documentation is first-rate.
-Dave
--
Dave McGuire, President/Curator
Large Scale Systems Museum
New Kensington, PA
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