Home > Storage > PowerScale (Isilon) > Product Documentation > Data Protection > Data Protection with Dell PowerScale SnapshotIQ > In-line data reduction and snapshots
In-line data reduction, introduced in OneFS 8.1.3 for the F810 platform, will not affect the data stored in a snapshot. However, snapshots can be created of compressed data.
If a compression tier is added to a cluster that already has a significant amount of data stored in snapshots, it will take time before the snapshot data is affected by compression. Newly created snapshots will contain compressed data, but older snapshots will not.