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Maximum number of transfer resources in an active/active configuration

If a failover occurs, the surviving storage system cannot process more than the maximum number of concurrent replication operations specified for that storage system. These operations can be ones that were scheduled for the surviving storage system, the failed-over storage system, or both.

If a failover occurs during data backup, all of the concurrent transfers happening at the time of the failure on the failed node are aborted and will get rescheduled by the partner node. Conversely, if a giveback occurs during data backup, all of the concurrent transfers happening at the time of the giveback on behalf of the partner node are aborted and will get rescheduled by the partner node.

If more than the maximum number of SnapMirror volume or qtree replications are scheduled to run concurrently, each additional transfer will generate an error message stating that resource limits have been reached. Each transfer beyond the maximum is re-attempted once per minute until it succeeds, SnapMirror is turned off, or the update is terminated.