TruVision NVR 22 Series, Руководство пользователя

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Chapter 15: Storage management
140 TruVision NVR 22 (SP) User Manual
7. When a HDD fails, the redundant HDD will start to record the cameras that have
the option “Redundant Recording/Capture” enabled.
Dual streaming
The dual streaming function lets you define how much of the HDD can be used to store
main stream and substream recordings as well as snapshots. This function allows you
to play back substream video over the network when the bandwidth is low.
The Dual Streaming window shows the three recording elements and their capacity
ratios on the HDD: Main stream, Substream, and Snapshots. The ratios can be easily
adjusted by dragging the slider between the recording types. By default, the main
stream ratio is 40%, the substream ration is 50%, and the snapshot ratio is 10%. You
can reduce the snapshot capacity to zero but the minimum values for main stream and
substream is 10%. Snapshots cannot occupy more than 20% of an HDD.
To adjust the capacity ratios:
1. From the menu toolbar, click Storage Management > Storage Mode.
2. Under Mode , select Dual Streaming .
3. To adjust the capacity ratio, drag the yellow slider between two recording elements.