185
Appendix A HDD Capacity Calculation
Calculate total capacity needed by each ATM 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 ATM DVR during
scheduled video recording
.
c
i
i
T
m
q
1
(3)
In the formula:
c
means total number of channels in one ATM DVR
Step 4: According to Formula (4) to calculate total capacity (accumulation)
T
q
that is needed for all
channels in ATM 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
Содержание DVR0X04AH-VD-E
Страница 1: ...ATM DVR Series User s Manual Version 1 1 0 ...
Страница 24: ...15 Drag mouse Select motion detection zone Select privacy mask zone ...
Страница 60: ...51 Figure 4 44 Figure 4 45 Figure 4 46 ...
Страница 61: ...52 Figure 4 47 Figure 4 48 Figure 4 49 ...
Страница 79: ...70 Figure 5 13 Figure 5 14 Figure 5 15 ...
Страница 101: ...92 Figure 5 44 Figure 5 45 ...
Страница 103: ...94 Figure 5 47 Figure 5 48 ...
Страница 123: ...114 Switch user you can use another account to log in Figure 5 78 ...
Страница 149: ...140 Figure 6 39 Figure 6 40 Figure 6 41 Please refer to the following sheet for detailed information ...
Страница 156: ...147 Figure 6 51 Figure 6 52 Figure 6 53 Figure 6 54 ...
Страница 175: ...166 Figure 6 85 Figure 6 86 ...
Страница 176: ...167 Figure 6 87 Figure 6 88 Figure 6 89 Please refer to the following sheet for log parameter information ...
Страница 200: ...191 Maxtor DiamondMax 20 STM3250820AS 250G SATA ...
