Supported Configurations

This topic outlines the supported configurations and limitations when using a Performance and Availability Cluster (PAC).

Trace flags

Switching on trace flags in any single region will cause those flags to be applied to every region in the PAC.

These are supported.

JCL is supported in a PAC, without restrictions.

IMS is not currently supported in a PAC.

Your PACs must conform to the following requirements:

All enterprise server instances in a PAC must be the same bitism.
All machines participating in the PAC must have the same product version installed.
This will avoid using inconsistent program versions between enterprise server instances.
All machines participating in the PAC must be using the same version of the same operating system.
Note:
- This is enforced when an enterprise server instance in a PAC is cold started, it determines the operating system version for the rest of the PAC members. If any enterprise server instance attempts to warm start and the version does not match it will be rejected.
- This minimizes the chance of a user programs failing to run on some of the enterprise server instances due to differences in OS-related functionality support.