OCB OCB-DVR404DB - Appendix 1 HDD Capability Calculate

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Input (NO/NC)
4CH
Output(NO/NC)
1CH
Other
system resource
Multi-CH record ,playback ,network operation and monitoring simultaneously
network
RJ45，auto adapt 10/100M Ethernet ,support PPPoE, DHCP
backup
1 USB2.0 ,support flash memory, remote HDD
mouse
1 USB1.1 interface ,support mouse operation
serial port
1 RS232 port or 1 RS485 port (alternative)
power supply
DC 12V / 3A
power(with out HDD)
<10W
unit weight
3kg
dimensions(W×D×H)
250×260×50mm
Operating humidity
Humidity 10%～95%
operation temperature
temperature -10℃～55℃
Appendix 1 HDD Capability Calculate
1. Required HDD capacity for one channel one hour (unit Mbyte):
HDD capacity＝bit rate / 8 × 3600 / 1024
The unit of bit rate is Kbit/s.
2. Required one channel HDD capacity (unit Mbyte):
HDD capacity＝required HDD capacity of one channel for one hour× daily recording time × number of
recording days
3. Required HDD capacity for all channels timing record (unit Mbyte):
HDD capacity＝required one channel HDD capacity × the number of channels
4. Required HDD capacity for all channel alarm records (unit Mbyte):
HDD capacity=required one channel HDD capacity × the number of channels ×Alarm rate