HDR Requirements

Make sure the HDR database servers meet HDR requirements in the following categories:

• Hardware and operating-system requirements

  For example, the hardware and operating system of the computers running the primary and secondary database servers must be identical.

• Database and data requirement

  For example, all databases must have logging turned on and all data must reside in logged dbspaces or sbspaces.

• Database server configuration requirements

  For example, the database server version, storage space and chunk configuration, and many other configurations must be identical.

• Connectivity

  For example, the connectivity information on each of the computers must identify the database server running on it and the other database server in the HDR pair.

For a complete list of configuration requirements, see the IBM Informix Dynamic Server Administrator's Guide.