Question about "Distributed" in the DFT name.

Grant Taylor cctalk at
Mon Nov 18 12:23:43 CST 2019

On 11/18/19 11:10 AM, Paul Koning wrote:
> Open systems may be distributed, distributed systems may be open, but 
> they are not synonyms.

Okay.  Fair enough.

I don't think the people using "Open Systems" as in Mainframe vs Open 
Systems vs Wintel were differentiating between "open" vs "distributed".

> For example, I'm not sure anyone would call VMS an open system, yet 
> clearly it's distributed (VAXcluster).

What is "open" in this context?  Is it open source?  Is it open 
communications protocols?  (As in OSI / POSIX.)  Is it something else?

I suspect that OpenVMS qualifies as the OSI / POSIX meaning of "open". 
;-)  But OpenVMS is decidedly not open source.

OpenMVS (a.k.a. USS) on the mainframe comes to mind too.  }:)

Grant. . . .
unix || die

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