[Simh] EXT :Re: PDP-10 simulation: DEUNA support help needed

[Clem Cole]

On Thu, Apr 30, 2015 at 4:20 PM, Rich Alderson <
simh at alderson.users.panix.com> wrote:

> Striping came along with redundant arrays of
> inexpensive disks.  At $50,000 a drive, RP07s were not candidates. ;-)
>

​Rich,

Be careful here with that sort of statement.   Striping as a technology
predates RAID and certainly could have been used by large commercial
systems if people had wanted too.   Supercomputers like Crays and CDC, as
well as the "mini-crays" like Convex and even the "Crayolla" (Stellar) all
striped with very expensive 19" technology in the late 1970s and 1980s.

You are correct, that striping as a popular technique does not go
mainstream until the 3.5" technology where the cost per byte got low enough
that "anyone" could afford it - i.e. when the idea of RAID shows up.

Clem
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