OpenVMS

Also known as VAX/VMS, VMS, Virtual Memory System

OpenVMS, often referred to as just VMS, is a multi-user, multiprocessing and virtual memory-based operating system. It is designed to support time-sharing, batch processing, transaction processing and workstation applications. Customers using OpenVMS include banks and financial services, hospitals and healthcare, telecommunications operators, network information services, and industrial manufacturers. During the 1990s and 2000s, there were approximately half a million VMS systems in operation worldwide.

Key facts

OS.name: OpenVMS
OS.logo: Vsi-openvms-logo.svg
OS.logo size: 250px
OS.screenshot: DECwindows-openvms-v7.3-1.png
OS.caption: OpenVMS V7.3-1 running the CDE-based DECwindows "New Desktop" GUI
OS.developer: VMS Software Inc (VSI) (previously Digital Equipment Corporation, Compaq, Hewlett-Packard)
OS.source_model: Closed-source with open-source components. Formerly source available
OS.kernel_type: Monolithic kernel with loadable modules
OS.supported_platforms: VAX, Alpha, Itanium, x86-64
OS.ui: DCL CLI and DECwindows GUI
OS.released: Announced: V1.0 /
OS.latest_release_version: V9.2-3
OS.marketing_target: Servers (historically Minicomputers, Workstations)
OS.programmed_in: Primarily C, BLISS, VAX MACRO, DCL. Other languages also used.
OS.language: English, Japanese. Historical support for Chinese (both Traditional and Simplified characters), Korean, Thai.
OS.updatemodel: Concurrent upgrades,rolling upgrades
OS.package_manager: PCSI and VMSINSTAL
OS.working_state: Current

via Wikipedia infobox

Official website

VMS Software, Inc.

VMS Software, Inc. (VSI) develops, sells and is currently porting OpenVMS (VMS) operating system to x86; offers support, training, software for VMS.

vmssoftware.com →

At VMS Software, we combine leading edge technology and new industry standards with OpenVMS systems to provide our customers and partners with choice and opportunity to profitably prioritize business needs. By linking the past to the future, we help OpenVMS users to protect and realize the full value of their application investments. For over 10 years OpenVMS customers have come to us to modernize systems, upgrade licenses, get 24x7x365 support , obtain professional services and improve technical expertise . By linking the past to the future, we help OpenVMS users to protect and realize the full value of their investments. Improving, modernizing, and extending the OpenVMS Operating System into the 21st century while maintaining the exceptional uptimes and customer support for which OpenVMS is known. Veteran OpenVMS R&D, service and support experts comprise the core of our team. Since 2014 an infusion of new engineering, service and support talent energizes the team to ensure the health of OpenVMS into the future. Manage and monitor your OpenVMS system using WebUI, featuring a RESTful interface as well as a modern and intuitive browser-based graphical user interface. Get unprecedented level of insight into your system's performance with PERFDAT: analyze data, identify trends, make predictions, and effectively manage your system's performance.

Wikidata facts

Official website: www.vmssoftware.com
Image: Openvms-8.4-2L1-dcl.png

Show 4 more facts

Commons category: OpenVMS
publication date: 1977-10-25
inception: 1977-10-25
software version identifier: V9.2-3

Sources (3)

via Wikidata · CC0

~41 min read

Article

28 sections

Contents

History
Origin and name changes
Port to Alpha
Port to Intel Itanium
Port to x86-64
Influence
Architecture
Executive and Kernel
File system
Command Language Interpreter
Features
Clustering
Networking
Programming
Development tools
Database management
User interfaces
Text-based user interfaces
Graphical user interfaces{{Anchor|DECwindows}}
Security
Vulnerabilities
POSIX compatibility
Hobbyist programs
Release history
See also
References
Further reading
External links

It was first announced by Digital Equipment Corporation (DEC) as VAX/VMS (Virtual Address eXtension/Virtual Memory System) alongside the VAX-11/780 minicomputer in 1977. OpenVMS has subsequently been ported to run on DEC Alpha systems, the Itanium-based HPE Integrity Servers, and select x86-64 hardware and hypervisors. Since 2014, OpenVMS is developed and supported by VMS Software Inc. (VSI). OpenVMS offers high availability through clustering—the ability to distribute the system over multiple physical machines. This allows clustered applications and data to remain continuously available while operating system software and hardware maintenance and upgrades are performed, or if part of the cluster is destroyed. VMS cluster uptimes of 17 years have been reported.