Home > Storage > PowerScale (Isilon) > Product Documentation > Data Efficiency > Next-Generation Storage Efficiency with Dell PowerScale SmartDedupe > Scheduling and running SmartDedupe
SmartDedupe can be run either on-demand (started manually) or on a predefined schedule, which is configured through the cluster management Job Operations section of the WebUI.
Dell Technologies recommends scheduling and running deduplication during off-hours, when the rate of data change on the cluster is low. If clients are continually writing to files, the amount of space saved by deduplication will be minimal because the deduplicated blocks are constantly being removed from the shadow store.
For most clusters, after the initial deduplication job has completed, the recommendation is to run an incremental deduplication job once every two weeks.