Virtual Memory System

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Virtual Memory System

(operating system)
(VMS) DEC's proprietary operating system originally produced for its VAX minicomputer.

VMS V1 was released in August 1978. VMS was renamed "OpenVMS" around version 5.5. The first version of VMS on DEC Alpha was known as OpenVMS for AXP V1.0, and the correct way to refer to the operating system now is OpenVMS for VAX or OpenVMS for Alpha. The renaming also signified the fact that the X/Open consortium had certified OpenVMS as having a high support for POSIX standards.

VMS is one of the most secure operating systems on the market (making it popular in financial institutions). It currently (October 1997) has the best clustering capability (both number and distance) and is very scalable with binaries portable from small desktop workstations up to huge mainframes.

Many Unix fans generously concede that VMS would probably be the hacker's favourite commercial OS if Unix didn't exist; though true, this makes VMS fans furious.


Usenet newsgroup: news:comp.os.vms.

References in periodicals archive ?
Radix has an unfortunate interaction with the lazy evaluation policies of the IRIX virtual memory system.
With the addition of memory optimization and a new common console to ARMTech's core CPU, Real Memory and Virtual Memory system management capabilities, Aurema continues to extend our workload management leadership," said John Kremer, vice president of product management for Aurema.
Apple's advanced virtual memory system and multi-threading support ensure that FrontBase can scale to the needs of your applications, whether you're running your small business on an iMac, or powering your online store with a fleet of G4s.
Linux, developed in 1991 by Linus Torvalds, is a free, multiuser, multitasking, demand-paged virtual memory system incorporating most, if not all, of the features found in the modern-day UNIX operating system.

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