Snapshots
A snapshot protects data by recording the state of a shared folder or LUN at a specific point in time. With snapshots, you can perform the following:
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Restore a shared folder or LUN to a previous state.
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Access and restore previous versions of files and folders.
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Create an identical copy of a shared folder or LUN.
Note:
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.