Home > Storage > PowerScale (Isilon) > Product Documentation > Data Protection > Data Protection with Dell PowerScale SnapshotIQ > Taking a snapshot
There are two methods to create user snapshots:
The first, on-demand, method is initiated using the simple ‘Capture a new snapshot’ button in the ‘snapshot summary’ tab of the OneFS user interface.
On the backend, creating a snapshot involves synchronizing changes across several levels, from the write-back cache (coalescer) to the snapshot tracking file (STF). The main elements of this process are: