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User's Manual
451
Appendix 1 HDD Capacity Calculation
Calculate the 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 NVR21-4KS3 Series
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Страница 129: ...User s Manual 109 Series Figure 3 56 Typical connection...
Страница 142: ...User s Manual 122 Figure 5 9 Unlock pattern login...
Страница 156: ...User s Manual 136 Figure 5 24 AcuPick human detection...
Страница 157: ...User s Manual 137 Figure 5 25 AcuPick motor vehicle detection Step 5 Configure the search conditions as needed...
Страница 160: ...User s Manual 140 The shortcut menu is different for different models Figure 5 28 Shortcut menu 1...
Страница 225: ...User s Manual 205 Figure 5 92 AcuPick human detection...
Страница 226: ...User s Manual 206 Figure 5 93 AcuPick motor vehicle detection Step 5 Configure the search conditions as needed...
Страница 399: ...User s Manual 379 Figure 5 268 Pattern login...
Страница 436: ...User s Manual 416 Figure 5 306 File management Step 2 Click Add Figure 5 307 Add file...
Страница 456: ...User s Manual 436 Figure 5 330 Shutdown 2...
Страница 485: ...User s Manual...