An OpenVMS System Integrated Product that provides a highly integrated OpenVMS computing environment distributed over multiple server systems that can share processing, mass storage, and other resources under a single OpenVMS security and management domain.

Systems in an OpenVMS Cluster system can share processing, mass storage (including system disks), and other resources under a single OpenVMS security and management domain. Within this highly integrated environment, systems retain their independence because they use local, memory-resident copies of the OpenVMS operating system. Thus, OpenVMS Cluster systems can boot and shut down independently while benefiting from common resources.

Applications running on one or more systems in an OpenVMS Cluster system can access shared resources in a coordinated manner. OpenVMS Cluster software components synchronize access to shared resources, allowing multiple processes on any system in the OpenVMS Cluster to perform coordinated, shared data updates.

Because resources are shared, OpenVMS Cluster systems offer higher availability than standalone systems. Properly configured OpenVMS Cluster systems can withstand the shutdown or failure of various components. For example, if one system in an OpenVMS Cluster is shut down, users can log in to another system to create a new process and continue working. Because mass storage can be shared clusterwide, the new process is able to access the original data. Applications can be designed to survive these events automatically.

Single architecture - Alpha
VSI V8.4-2L1VSI V8.4-2L2
HPE V7.3-2YesYes
HPE V8.3YesYes
HPE V8.4YesYes
Single architecture - Integrity
HPE V8.4VSI V8.4-2L2VSI V8.4-2LVSI V8.4-2L1VSI V8.4-2L3
HPE V8.4YesYesYesYesYes
VSI V8.4-1H1YesYesYesYesYes
VSI V8.4-2YesYesYesYesYes
VSI V8.4-2L1YesYesYesYesYes
VSI V8.4-2L3YesYesYesYesYes
Mixed Architecture Cluster Matrix
HPE Alpha V7.3-2HPE Alpha V8.3HPE Alpha V8.4VSI Alpha V8.4-2L1VSI Alpha V8.4-2L2
HPE I64 V8.4YesYesYesYesYes
VSI I64 V8.4-1H1NoNoYesYesYes
VSI I64 V8.4-2NoNoNoYesYes
VSI I64 V8.4-2L1YesYesYesYesYes
VSI I64 V8.4-2L3YesYesYesYesYes


All OpenVMS Cluster systems have the following software features in common:

Latest Version

Part of the OS


Integrity: HAOE.