How Does SelfReliant support the online upgrading of applications?

Managed resources actively providing service can be taken out of service via the SelfReliant Console or a user developed application, such as an upgrade manager. The Availability Manager will automatically initiate switchovers to the appropriate backup resources, allowing the offline resources to be upgraded. The SelfReliant system model and its support for dependency and ‘follow-the-leader’ relationships simplifies this process allowing operations on a single object in the cluster to appropriately affect the state of related resources.

Once upgrading is complete, the resources can be brought back online and the user or upgrading application can continue this process on all resources/nodes until the upgrade is complete. Application’s using SelfReliant’s checkpointing services allow this process to occur with minimal to no disruption in service. More.

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