VSE (operating system) Totally Explained

Everything about Vse Operating System totally explained

z/VSE (Virtual Storage Extended) is an operating system for IBM mainframe computers, the latest one in the DOS/360 lineage, which originated in 1965. It is less common than prominent z/OS and is mostly used on smaller machines. Primary z/VSE development occurs in IBM's Böblingen labs in Germany.

Overview

VSE originally supported 24-bit addressing. As the underlying hardware evolved, VSE acquired support for 31-bit addressing. IBM released z/VSE Version 4 in 2007. z/VSE Version 4 requires 64-bit z/Architecture hardware. The latest shipping release (as of November, 2007) is z/VSE 4.1.1.
IBM recommends that z/VSE customers run Linux on zSeries alongside, on the same physical system, to provide another 64-bit application environment that can access and extend z/VSE applications and data via Hipersockets using a wide variety of middleware. CICS, one of the most popular enterprise transaction processing systems, is extremely popular among z/VSE users and now supports recent innovations such as Web services. DB2 is also available and popular. Job Control Statements (JCS) is z/VSE's batch processing interface. There is also another, special interface for system console operators. z/VSE, like z/OS systems, had traditionally supported 3270 terminal user interfaces. However, most z/VSE installations have at least begun to add Web browser access to z/VSE applications. z/VSE's TCP/IP is a separately priced option for historic reasons, and is available in two different versions from two vendors.

Older z/VSE versions

Since z/VSE 3.1, Fibre Channel access to storage devices is supported, although only on IBM's Enterprise Storage Server (ESS) and it's successors. z/VSE 3.1 is still compatible with 31-bit mainframes, as opposed to z/VSE 4. This version will be supported to 2009.
A previous generation, VSE/ESA 2.7, is no longer supported since 28-02-2007.Further Information

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