Home > Storage > PowerScale (Isilon) > Product Documentation > Data Efficiency > Next-Generation Storage Efficiency with Dell PowerScale SmartDedupe > SmartDedupe licensing
SmartDedupe is included as a core component of OneFS but requires a valid product license key to be activated. This license key can be purchased through your Dell account team. An unlicensed cluster shows a SmartDedupe warning until a valid product license is purchased and applied to the cluster.
License keys can be easily added through the Activate License section of the OneFS WebUI, accessed by going to Cluster Management > Licensing.
Note: The SmartDedupe dry-run estimation job can be run without any licensing requirements, allowing you to assess the potential space savings that a dataset might yield before deciding whether to purchase the full product.