Application preservation

The application preservation facility enhances system availability and provides additional protection from CP failures. This support is available on models with two or more central processors (CPs). Using application preservation, the system moves an application in process from a failing CP to another operating CP. Both the CP failure and the move are transparent to the application.

There are no software corequisites when running with shared CPs. For LPs using shared CPs, even 1-way LPs can survive a CP failure without experiencing a failure to the application or the LP, providing the 1-way LP is being run on a model with more than one physical core.