239
8
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
av0318-1068
PGQP2627YA
Содержание K-NL408KT/G
Страница 1: ...Network Disk Recorder User s Manual Model No K NL408KT G Version 1 0 1 ...
Страница 24: ...18 3 4 Connection Sample Please refer to Figure 3 1 for connection sample Figure 3 1 ...
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Страница 129: ...123 Figure 4 117 In Figure 4 117 click one HDD item the S M A R T interface is shown as in Figure 4 118 ...
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Страница 151: ...145 Figure 4 140 Step 2 Click Add user button Enter Add user interface See Figure 2 141 ...
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Страница 162: ...156 Please input your username and password ...
Страница 163: ...157 Figure 5 3 ...
Страница 168: ...162 Figure 5 11 You can click this icon to display or hide the PTZ control platform 3D Intelligent Positioning Key ...
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