7-mode/HA pair/V-Series : Volumes : Managing deduplication : When deduplication is recommended
When deduplication is recommended
To ensure that you get the maximum benefit from deduplication, certain best practices and configurations are recommended for your storage system.
The following guidelines are best practices for deduplication:
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If you have a performance sensitive solution, carefully consider the performance impact of deduplication and measure the impact in a test setup before deploying deduplication.
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Use the ONTAP version 7.3. Deduplication requires at a minimum ONTAP 7.2.5.1, but ONTAP 7.3 is recommended.
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Limit the number of concurrent deduplication processes. Stagger deduplication schedules so that it runs on alternate days.
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Use automatic mode when possible so deduplication runs only when significant additional data has been written to each flexible volume.
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Run deduplication before creating a Snapshot copy to obtain maximum savings.
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Set the Snapshot reserve for greater than 0 if Snapshot copies are used.
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Leave some free space for the deduplication metadata.
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If deduplication is used on the source volume, use deduplication on the destination volume.
Deduplication is not recommended for the following environments:
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Databases
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vFiler unit
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SnapVault
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Metrocluster
Parent Topic:
Storage node
