> On Jun 25, 2019, at 7:42 PM, Bob Supnik <[email protected]> wrote:
>
> The RC25 (code named Aztec) got started as I was leaving Storage Engineering.
> ...
>
> The RC25 was pretty much a disaster, technically and financially, and the end
> of the line for DEC's removable disk program.
It was quite ugly, because you had two drives on one spindle. RSTS was told to
support an RC25-only config, apparently for use in Royal Navy submarines (space
constrained, obviously). The trouble is that removing the removable pack meant
spinning down the system unit (boot drive). RSTS was never designed for that
and would get very unhappy. We hacked this by basically putting a system
freeze feature in that would let you freeze everything while the drive was off.
paul
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