277
Appendix A HDD Capacity Calculation
Calculate total capacity needed by each DVR 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 DVR during
scheduled video recording
.
c
i
i
T
m
q
1
(3)
In the formula:
c
means total number of channels in one DVR
Step 4: According to Formula (4) to calculate total capacity (accumulation)
T
q
that is
needed for all channels in DVR during
alarm video recording (including motion
detection)
.
c
i
i
T
m
q
1
×
a%
(4)
In the formula
：
a%
means alarm occurrence rate
You can refer to the following sheet for the file size in one hour per channel. (All the data
listed below are for reference only.)
Bit stream size
（
max
）
File size
Bit stream size
（
max
）
File size
96K
42M
128K
56M
160K
70M
192K
84M
224K
98M
256K
112M
320K
140M
384K
168M
Содержание XVR
Страница 1: ...Standalone XVR User s Manual V1 0 0...
Страница 84: ...75 Figure 3 73 Figure 3 74...
Страница 93: ...84 restore original status Figure 3 85 Figure 3 86 3 11 1 3 1 Upgrade Important...
Страница 117: ...108 Figure 3 109 Figure 3 110...
Страница 118: ...109 Figure 3 111 Figure 3 112...
Страница 132: ...123 Figure 3 129 Click draw button to draw the zone See Figure 3 130 Figure 3 130 Name Input customized rule name...
Страница 139: ...130 Figure 3 136 Figure 3 137...
Страница 140: ...131 Figure 3 138 Figure 3 139...
Страница 143: ...134 Figure 3 142 Figure 3 143...
Страница 144: ...135 Figure 3 144 Figure 3 145...
Страница 152: ...143 Figure 3 157 Figure 3 158...
Страница 170: ...161 Figure 3 180 For digital channel the interface is shown as below See Figure 3 181 Figure 3 181 3 11 5 6 ATM POS...
Страница 184: ...175 Figure 3 198...
Страница 222: ...213 Figure 4 58 Figure 4 59...
Страница 236: ...227 Figure 4 75 Figure 4 76...
Страница 241: ...232 Figure 4 83 Figure 4 84 Please refer to the following sheet for detailed information...
Страница 244: ...235 Figure 4 86 Figure 4 87 Figure 4 88 Please refer to the following sheet for detailed information...
Страница 287: ...278 448K 196M 512K 225M 640K 281M 768K 337M 896K 393M 1024K 450M 1280K 562M 1536K 675M 1792K 787M 2048K 900M...
