A snapshot protects data by recording the state of a thick volume, thin volume, or LUN at a specific point in time. With snapshots, you can perform the following:
Restore a volume or LUN to a previous state.
Access and restore previous versions of files and folders.
Create an identical copy of a volume or LUN.
To use snapshots, your NAS model must support snapshots and have at least 1 GB of memory. For a list of compatible NAS models, see www.qnap.com/solution/snapshots.