Q: While recording, there is a display
on the right-hand-side console: "Delta: 1034.4 Mh". What
does this mean? What is it for?
A: This value shows averaged speed of storage
space occupation. "Mh" means
Megabytes per Hour. It averages out since last turning on recording.
The longer time of
recording, the more accurate value it would present. This value
reflects current system
recording settings such as number of connected cameras, resolutions,
detection parameters, compression quality and sensitivity. Also
it can help to predict disk
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