Natural/HA (High Availability)

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# Natural/HA (High Availability)

Natural/HA is the feature of Natural that delivers an "always on" to enterprise applications that provide 24/7 availability to their users with negligible downtime.

Natural/HA is intended for production (not development) environments. It is also intended for interactive Natural applications, not Natural programs running in batch mode.

Natural/HA does not require specific binaries. The standard Natural binaries contain a redesigned Runtime that can execute both HA and non-HA applications, depending on the mode they are running in.

This documentation is organized under the following headings:

Why use Natural/HA? | A description of the main menu. Information on the programming modes supported by Natural. An overview of the menus available from the main menu.
Components and Operation | Design overview and principles of operation.
Porting applications to Natural/HA | What needs to be done (or not done) in order to enable applications to run in an HA environment.
Deployment of Updates | Considerations relevant to deployment of updates in and HA environment.
Terminology | Glossary of technical terms used in this documentation.