[Simh] Simh Digest, Vol 198, Issue 16

[Tim Shoppa]

The Teradata database-engine racks had large arrays of disks and high
densities of CPU's. Not sole 11/84's.

If you had a standalone short rack with a 11/84, I think that was used as
front-end communications, RJE-style, to the IBM mainframe it attached to. I
recall many vendors put a DEC bisync card in a Unibus 11/44 or 11/84
chassis and effectively emulated RJE. This may have been the Teradata
"IFP", but it could also have been some other third-party bolt-on not
directly sold by Teradata related to other RJE stuff in the shop.

If I had to guess based on my experience: at least half of all 11/44's and
11/84's sold were equipped with bisync cards and used in a variety RJE
front-ends.

Tim N3QE



On Fri, Jul 10, 2020 at 11:56 AM Tom Perrine <tom.perrine at gmail.com> wrote:

> Way back in the mid/late 80s we had a machine from ATT/Teradata which was
> a DB appliance.  It was a standalone rack about the size of an RA81, IIRC.
> It claimed to have "single board PDP-11, a PDP-11/84" as the CPU.
>
> I had never heard of it before or since.  Was that a typo? Hype? Flat out
> wrong? Some sort of OEM thing?
>
> Thanks!
>
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