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How HA pairs work with deduplication

Starting with Data ONTAP 8.1, deduplication operations can be run on volumes from either of the nodes during takeover in an HA pair. The maximum number of concurrent deduplication operations allowed on each node of an HA pair is eight.

If one of the nodes fails, the other node takes over the deduplication operations managed by the failed node. In takeover mode, the working node continues with the deduplication operations. The working node can start deduplication operations on volumes that belong to the failed node. When the working node is managing the deduplication operations on volumes that belong to both the nodes, the maximum number of concurrent deduplication operations is still eight.