Appendix b: record duration – ARM Electronics DVRHD OSD User Manual
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OSD Setup Manual
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Appendix B: Record Duration
The record duration relates to recording rate, image quality, HDD capacity, and event
settings. The following tables give sample calculation of record duration according to
different recording rate, image quality, and HDD capacity, excluding consideration of events,
for different models with different recording mode. The recording quality refers to the
Normal Qlty setting of <Per Camera Config> in <Record Setting>, assuming all channel are
set to the same quality at all times.
NOTE: Record duration times are based on actual tests and represent average file
sizes. Performance may vary depending on specific installations and use. Audio
recording requires 8 KB per second (or 0.7 GB per day) for data storage.
I.
Refer to the following tables for H.264 recording:
Record Duration (Days): Full-D1, Global [Day, Night, Weekend] (without Audio)
Recording Rate
Recording Quality Mode
Low
Fair
Mid
High
Best
Total PPS of all
Channels
NTSC
PAL
NTSC
PAL
NTSC
PAL
NTSC
PAL
NTSC
PAL
NTSC
PAL
(6 KB) (6 KB) (10 KB) (10 KB) (14 KB) (14 KB) (18 KB) (18 KB) (22 KB) (22 KB)
320 GB Internal Storage
30
25
19.62
23.55
11.77
14.13
8.41
10.09
6.54
7.85
5.35
6.42
15
12.5
39.24
47.09
23.55
28.26
16.82
20.18
13.08
15.70
10.70
12.84
7.5
6.25
78.49
94.19
47.09
56.51
33.64
40.37
26.16
31.40
21.41
25.69
500 GB Internal Storage
30
25
30.92
37.11
18.55
22.27
13.25
15.90
10.31
12.37
8.43
10.12
15
12.5
61.85
74.22
37.11
44.53
26.51
31.81
20.62
24.74
16.87
20.24
7.5
6.25
123.70 148.44 74.22
89.06
53.01
63.62
41.23
49.48
33.74
40.48
750 GB Internal Storage
30
25
46.62
55.95
27.97
33.57
19.98
23.98
15.54
18.65
12.72
15.26
15
12.5
93.25
111.90 55.95
67.14
39.96
47.96
31.08
37.30
25.43
30.52
7.5
6.25
186.49 223.79 111.90 134.27
79.93
95.91
62.16
74.60
50.86
61.03
1 TB Internal Storage
30
25
63.83
76.59
38.30
45.96
27.36
32.83
21.28
25.53
17.41
20.89
15
12.5
127.66 153.19 76.59
91.91
54.71
65.65
42.55
51.06
34.82
41.78
7.5
6.25
255.31 306.38 153.19 183.83 109.42 131.30
85.10 102.13 69.63
83.56