If the network utilization during DASH Copy or backups with deduplication is low, apply all the below settings on all source data mover MediaAgents associated with the source storage policy copy. These settings are enabled by default for auxiliary copy operations.
Increase the Number of Signature Look Ups in the Destination Deduplication Database
You can improve the DASH copy efficiency by performing more signature lookups on the destination DDB by
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Setting the number of read ahead links for deduplication from the client level from the Commcell Console.
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Optionally you can use the DataMoverLookAheadLinkReaderSlots additional setting. For more information on configuring an additional settings see, Adding or Modifying Additional Settings from the CommCell Console.