OpenVMS

[Shivkumar]

Dear Sirs,

Is OpenVMS an incarnation of VAX operating System ?

Thanks,
Shiv

[Hein van den Heuvel · Accepted solution]

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.

[Arch_Muthiah]

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

[Karl Rohwedder]

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

[Wim Van den Wyngaert]

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