190
7
Appendix A HDD Capacity Calculation
Calculate total capacity needed by each device according to video recording (video recording type and
video file storage time).
Step 1: According to Formula (1) to calculate storage capacity
i
q
that is the capacity of each channel
needed for each hour, unit Mbyte.
1024
3600
8
i
i
d
q
(1)
In the formula:
i
d
means the bit rate, unit Kbit/s
Step 2: After video time requirement is confirmed, according to Formula (2) to calculate the storage
capacity
i
m
, which is storage of each channel needed unit Mbyte.
i
m
=
i
q
×
i
h
×
i
D
(2)
In the formula:
i
h
means the recording time for each day (hour)
i
D
means number of days for which the video shall be kept
Step 3: According to Formula (3) to calculate total capacity (accumulation)
T
q
that is needed for all
channels in the device during
scheduled video recording
.
c
i
i
T
m
q
1
(3)
In the formula:
c
means total number of channels in one device
Step 4: According to Formula (4) to calculate total capacity (accumulation)
T
q
that is needed for all
channels in device during
alarm video recording (including motion detection)
.
c
i
i
T
m
q
1
×
a%
(4)
In the formula
：
a%
means alarm occurrence rate
Содержание k-nl304g
Страница 1: ...Network Video Recorder User s Manual Model No K NL304K G K NL308K G Version 1 0 2 ...
Страница 41: ...33 Figure 4 24 Tips On the navigation bar click to enable disable tour Click Save button to save current setup ...
Страница 58: ...50 Figure 4 51 Figure 4 52 ...
Страница 78: ...70 Figure 4 70 Figure 4 71 ...
Страница 79: ...71 Figure 4 72 Figure 4 73 ...
Страница 86: ...78 Figure 4 80 Figure 4 81 ...
Страница 87: ...79 Figure 4 82 Figure 4 83 ...
Страница 90: ...82 Figure 4 86 Figure 4 87 4 11 Network 4 11 1 Basic Setup ...
Страница 113: ...105 Figure 4 110 In Figure 4 110 click one HDD item the S M A R T interface is shown as in Figure 4 111 Figure 4 111 ...
Страница 116: ...108 Figure 4 114 Figure 4 115 ...
Страница 127: ...119 Figure 4 128 Figure 4 129 ...
Страница 162: ...154 Figure 5 40 Figure 5 41 ...
Страница 163: ...155 Figure 5 42 Figure 5 43 Figure 5 44 ...
Страница 171: ...163 Figure 5 56 Figure 5 57 Figure 5 58 Figure 5 59 Please refer to the following sheet for detailed information ...
Страница 173: ...165 Figure 5 60 Figure 5 61 ...
