Abstract: A system and method for application fault tolerance and recover using topologically remotely located computing devices are provided. A primary computing device runs one instance of an application (i.e. the primary application instance) at a production site and an active standby computing device runs a second instance of the application (i.e. the shadow application instance) at a recovery site which may be topologically remotely located from the production site. The two instances of the application are brought into a consistent state by running an initial application “checkpoint” on the primary computing device followed by an application “restart” on the active standby computing device. Events occurring in the primary application instance may be automatically and continuously recorded in a log and transferred to the recovery site using a peer-to-peer remote copy operation so as to maintain the states of the application instances consistent.

Abstract: A system and method for application fault tolerance and recover using topologically remotely located computing devices are provided. A primary computing device runs one instance of an application (i.e. the primary application instance) at a production site and an active standby computing device runs a second instance of the application (i.e. the shadow application instance) at a recovery site which may be topologically remotely located from the production site. The two instances of the application are brought into a consistent state by running an initial application “checkpoint” on the primary computing device followed by an application “restart” on the active standby computing device. Events occurring in the primary application instance may be automatically and continuously recorded in a log and transferred to the recovery site using a peer-to-peer remote copy operation so as to maintain the states of the application instances consistent.

Abstract: A system and method for relocating running applications to topologically remotely located computing systems are provided. With the system and method, when an application is to be relocated, the application data is copied to a storage system of a topologically remotely located computing system which is outside the storage area network or cluster of the original computing system. In addition, a stateful checkpoint of the application is generated and copied to the topologically remotely located computing system. The copying of application data and checkpoint metadata may be performed using a peer-to-peer remote copy operation, for example. The application data and checkpoint metadata may further be copied to an instant copy, or flash copy, storage medium in order to generate a copy of checkpoint metadata for a recovery time point for the application.