
AHD DVR User Manual
73
Appendix
B:
Calculate
Recording
Capacity
You
can
calculate
the
size
of
hard
disk
according
to
the
storage
time
and
NVR
recording
settings.
The
formula
is
as
follows
in
full
frame
rate
condition.
Used
space
per
hour
(MB/h)
=
Bitrate(kbps)
÷
8
×
3600
÷
1024.
The
below
are
the
details
at
different
settings.
Resolution
Frame
Rate
Bit
Rate
(kbps)
Used
Space(MB/h)
3MP
1080P
30fps
(NTSC)
12M
5400
8Mb
3600
7Mb
3150
5Mb
2250
4Mb
1800
720P
1080P
3MP
30fps
(NTSC)
15fps
(NTSC)
15fps
(NTSC)
6Mb
2700
4Mb
1800
2Mb
900
1Mb
450
256Kb
113
960H
30fps
(NTSC)
2Mb
900
1.5Mb
675
512Kb
225
The
calculation
format
is:
Total
Recording
capacity
=Used
space
per
hour
(MB/h)
(coverage
rate
of
hard
disk)
×
recording
time
(hour)
×channel
numbers
For
instance,
one
customer
sets
resolution
to1080P,
frame
rate
to
15fps,
bitrate
to
4M
and
enables
total
4
channels.
He
wants
the
unit
to
record
continuously
in
a
month.
Below
is
the
calculation:
Total
Recoding
capacity
=900
(mb/h)
X
24(hours/day)
X30(days)
X4
(channels)=
2592000
(MB)=2531.25(GB)
Therefore,
customers
just
install
one
SATA
HDDs
with
3TB,
it
can
almost
record
for
one
month.
Appendix
C:
Compatible
Devices
Содержание IP Series
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Страница 68: ...AHD DVR User Manual 62 these two channels change the position of each other Fig 1 Fig 2 Fig 3 Fig 4 Fig 5 ...
Страница 81: ...75 Notes ...