Browse Definitions :
Definition

VAX (Virtual Address eXtension)

VAX (Virtual Address eXtension) is an established line of mid-range server computers from the Digital Equipment Corporation (DEC). It followed DEC's PDP-11 in 1978 and also introduced a new operating system, VMS. VAX included a 32-bit processor and virtual memory. Historically, VAX has competed with a number of Hewlett-Packard and IBM computers in the small enterprise and university-scientific marketplace. In earlier times, this size and price range of computer was known as the minicomputer. Today, VAX and its competitors sell "servers" for business networks that use the client/server computing model.

DEC indicates that over 250,000 VAX systems are in use. As of October, 1996, models were in the $18,000 to 46,000 price range. Based on VMS, its operating system is called OpenVMS. Among other features, OpenVMS can be used with special software that facilitates its use with Windows NT servers. OpenVMS also supports the open standard Portable Operating System Interface set of commands and C language programming interface, effectively making it both a VMS system and a UNIX system.

Eric S. Raymond notes that the VAX running a BSD Unix system was a favorite of hackers for its especially large and programmer-friendly set of assembler instructions.

This was last updated in March 2011

SearchCompliance

  • information governance

    Information governance is a holistic approach to managing corporate information by implementing processes, roles, controls and ...

  • enterprise document management (EDM)

    Enterprise document management (EDM) is a strategy for overseeing an organization's paper and electronic documents so they can be...

  • risk assessment

    Risk assessment is the identification of hazards that could negatively impact an organization's ability to conduct business.

SearchSecurity

  • honeypot (computing)

    A honeypot is a network-attached system set up as a decoy to lure cyber attackers and detect, deflect and study hacking attempts ...

  • spam trap

    A spam trap is an email address that is used to identify and monitor spam email.

  • cracker

    A cracker is someone who breaks into someone else's computer system, often on a network; bypasses passwords or licenses in ...

SearchHealthIT

SearchDisasterRecovery

  • risk mitigation

    Risk mitigation is a strategy to prepare for and lessen the effects of threats faced by a business.

  • call tree

    A call tree is a layered hierarchical communication model that is used to notify specific individuals of an event and coordinate ...

  • Disaster Recovery as a Service (DRaaS)

    Disaster recovery as a service (DRaaS) is the replication and hosting of physical or virtual servers by a third party to provide ...

SearchStorage

  • cloud testing

    Cloud testing is the process of using the cloud computing resources of a third-party service provider to test software ...

  • storage virtualization

    Storage virtualization is the pooling of physical storage from multiple storage devices into what appears to be a single storage ...

  • erasure coding

    Erasure coding (EC) is a method of data protection in which data is broken into fragments, expanded and encoded with redundant ...

Close