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.
q
1
= d
1
÷ 8 x 3600 ÷1024
(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.
m
1
=
q
1
×
h
1
×
D
1
(2)
In the formula:
h
1
means the recording time for each day (hour)
D
1
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
.
(3)
In the formula:
c
means total number of channels in one
DVR
Step 4: According to Formula (4) to calculate total capacity (accumulation)
that is
needed for all channels in DVR during
alarm video recording (including motion
detection)
.
(4)
In the formula
：
a%
means alarm occurrence rate
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Summary of Contents for DVR-LT016480
Page 1: ...Standalone DVR User s Manual 1...
Page 13: ...13...
Page 44: ...Figure 4 15 Figure 4 16 Figure 4 17 44...
Page 86: ...Figure 5 50 86...
Page 91: ...Figure 6 11 91...
Page 115: ...Figure 7 39 Figure 7 40 Figure 7 41 115...
Page 130: ...Add organization structure Add device Figure 8 5 130...
