Videovox Pro LNS series Uživatelský manuál stáhnout pdf (Strana 104)

104

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

q that is the capacity

of each channel needed for each hour, unit Mbyte.

102436008

dq (1)

In the formula:

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

m , which is storage of each channel needed unit

Mbyte.

(2)

In the formula:

means the recording time for each day (hour)

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.

∑

(3)

In the formula:

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).

∑

×a% (4)

In the formula：a% means alarm occurrence rate

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Videovox Pro LNS series Uživatelský manuál Strana 104