topic Re: OpenVMS in Operating System - OpenVMS

OpenVMS

Shivkumar — Sat, 19 Nov 2005 23:19:53 GMT

Dear Sirs,

Is OpenVMS an incarnation of VAX operating System ?

Thanks,
Shiv

Re: OpenVMS

Hein van den Heuvel — Sat, 19 Nov 2005 23:53:30 GMT

Close.

VAX is specific 32 bit hardware developed by Digital Equipement Computers.

VMS was the name of the most important, but not only, OS running on it.

OpenVMS is a marketing driven rename of VMS.

See: http://h71000.www7.hp.com/faq/vmsfaq_001.html#faq_general

hth,
Hein.

Re: OpenVMS

Arch_Muthiah — Sun, 20 Nov 2005 20:23:32 GMT

Shiva,

You might have gone thru the docs Mr.Hein mentioned.

VAX is a hardware (32 bit) and
VMS is a Operating System by Digital Equipment Corp. (DEC).

VMS then became OpenVMS (X/Open consortium certified OpenVMS is the first OS with OPEN System compliance).

DEC then developed the world first 64 Bit computer called ALPHA.

The OpenVMS runs on both of their hardwares - VAX (32 bit) and ALPHA (64).

Now this OpenVMS runs on Intel's I64 server also, because I64 server architecture initially designed by DEC.

The VMS system's project manager, Dave Cutler was the project manager for Microsoft's WinNT also.

You can find more ineteresting info about the DEC's history and Dave here...
http://www.answers.com/topic/dave-cutler

Archunan

Re: OpenVMS

Karl Rohwedder — Mon, 21 Nov 2005 00:55:23 GMT

A quite intersting reading about the history of VMS is:
http://h71000.www7.hp.com/openvms/20th/vmsbook.pdf

It has very noce pictures too...

regards Kalle

Re: OpenVMS

Wim Van den Wyngaert — Mon, 21 Nov 2005 03:41:09 GMT

Note in the last link on page 65 a nice overview of John Gillings on the subject of what changed in VMS during all these years.

Wim