Appendix C Calculating Recording Capacity - Q-See QSTD2404 User Manual

Appendix C
Users can calculate th
time and DVR recordi
d etails for d ifferent settin
Video
Resolution
Format
PAL CIF
NTSC CIF
The calculation formula is:
Total Recording capacity =Used space per hour (MB/h) (coverage rate of
For instance, if you use NTSC cameras, set resolution to CIF, video quality to Lower,
frame rate to 240 fps for enabling a total of 8 channels and you want the unit to
record continuously for a month. Below
Total Recoding
In this case if you would inst
month.
For 4-channel DVR:
Total Recoding
QSTD2400 Series DVR User's Manual
Calculating Recording Capacity
e size of hard drive neede
ng s ettings. The DVR
g s for 200 fps 8
Frame
Rate Total
(FPS)
25
30
hard drive) × recording time (hour) ×channel
numbers
capacity =112.5(mb/h)
= 648000(MB)
= 648(GB)
all two 320GB SATA HDDs, it can almost record for one
capacity =112.5(mb/h)
uses fixed vi deo bit rat
-channel DVR.
Video Qu ality
Highest
Higher
Medium
Lower
Lowest
Highest
Higher
Medium
Lower
Lowest
is the calculatio n:
X 24(hours/day)
X8(chann els)
X 24(hours/day)
X4(chann els)
d according to the saving
e. Below
Used
Bit R ate
Spac e
(kbps)
(MB/ h)
640 281
512 225
384 168.7
256 112.5
128 56
640 281
512 225
384 168.7
256 112.5
128 56
X30(days)
X30(days)
are the
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