User's Manual
429
Appendix 2 HDD Capacity Calculation
Calculate total capacity needed by each device according to video recording (video recording type
and video file storage time).
1. According to Formula (1) to calculate storage capacity
that is the capacity of each channel
needed for each hour, unit Mbyte.
In the formula:
means the bit rate, unit Kbit/s
2. After video time requirement is confirmed, according to Formula (2) to calculate the storage
capacity
, which is storage of each channel needed unit Mbyte.
In the formula:
means the recording time for each day (hour)
means number of days for which the video shall be kept
3. According to Formula (3) to calculate total capacity (accumulation)
that is needed for all
channels in the device during
scheduled video recording
.
In the formula:
means total number of channels in one device
4. According to Formula (4) to calculate total capacity (accumulation)
that is needed for all
channels in device during
alarm video recording (including motion detection)
.
In the formula:
means alarm occurrence rate
Содержание NVR41-4KS2 Series
Страница 1: ...Dahua Network Video Recorder User s Manual ZHEJIANG DAHUA VISION TECHNOLOGY CO LTD V1 1 0 ...
Страница 74: ...User s Manual 58 Figure 2 79 Alarm input port Figure 2 80 Alarm input port ...
Страница 101: ...User s Manual 85 Figure 3 41 Step 9 Secure the HDD bracket and put the top cover back ...
Страница 114: ...User s Manual 98 3 6 15 NVR616 4KS2 Series The following figure is for reference only Figure 3 58 ...
Страница 132: ...User s Manual 116 Figure 4 19 Modify IP Step 3 Set parameters See Table 4 5 ...
Страница 147: ...User s Manual 131 Figure 4 29 Period Step 3 Set record type See Figure 4 30 ...
Страница 319: ...User s Manual 303 The Exception interface is displayed See Figure 4 190 Figure 4 190 Figure 4 191 Figure 4 192 ...
Страница 420: ...User s Manual 404 Figure 4 290 File management Step 2 Click Add The Add interface is displayed See Figure 4 291 ...
Страница 452: ...User s Manual ...