QNAP Security VioStor NVR (Version: 4.0.0) - Manual (Page 167)

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Note:

Starting and stopping manual recording will not affect scheduled or alarm recording
tasks. They are independent processes.

All the settings will not take effect until ‘Apply’ is clicked. When applying the changes,
recording will stop for a while (maximum 1 minute) and then restart.

The settings of the snapshot folder are global settings which will be applied to all the
channels.