You can temporarily suspend deduplication during backups for a storage pool for diagnostics and maintenance purposes, and then resume again later. When you disable deduplication for a storage pool, deduplication is disabled for all dependent storage policy copies. However, if you already disabled deduplication for a dependent storage policy copy, then deduplication is not enabled for that copy when you resume deduplication for the storage pool.
Procedure
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From the CommCell Browser, go to Storage Resources > Storage Pools. 
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Right-click the storage pool, and then click Properties > Storage Pool Copy. The Storage Pool Copy properties dialog box appears. 
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Click the Deduplication tab, and then click the Advanced tab. 
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Do the following: - 
To temporarily suspend deduplication, select Temporarily disable deduplication. 
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To resume deduplication, clear Temporarily disable deduplication. 
 
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Related Topics
Modifying the Properties of a Deduplication Settings on a Storage Policy Copy