Bolide Technology SVR-80xx-S series, User Manual

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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 that is the capacity
of each channel needed for every hour, unit Mbyte.
i
q
1024 3600 8
÷ × ÷ =
i i
d q
(1)
In the formula: means the bit rate, unit Kbit/s
i
d
Step 2: After video time requirement is confirmed, according to Formula (2) to
calculate the storage capacity , which is storage of each channel needed unit Mbyte.
i
m
i
m
= × × (2)
i
q
i
h
i
D
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) that is
needed for all channels in the DVR during
scheduled video recording
.
T
q
∑
=
=
c
i
i T
m q
1
(3)
In the formula: means total number of channels in one DVR
c
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)
.
T
q
∑
=
=
c
i
i T
m q
1
×
a%
(4)
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