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Hard disk capability calculation

Appendix 3.Hard disk capability calculation
Make sure the hard disk installed to the DVR for the first time. Pay attention to the IDE hard disk lines connection.
1、 Hard disk capability
There is no limit for recording machine. We recommend 120G~250G size to keep better stability.
2、 Overall capability option
The hard disk capability formula is:
Overall capability(M)=channel number*time(hour)*capability in an hour(M/hour)
The recording time formula is:
Recording time(hour)= overall capability(M)
Capability in an hour(M/hour)*channel number
The DVR introduces the H.264 compression technology. Its dynamic range is very large so the hard disk capability calculation is based on the estimation values of each channel creating files in an hour.
Example:
For one piece 500G HDD,real time CIF for recording,it will keep recording for about 25 days.HDD spaces per channel is 200M/H,if 4channels real time CIF at 24hours recording uninterrupted,it can last:500G/(200M/H*24H*4ch)=26 days, if 4channels

real time D1 at 24hours recording uninterrupted, it can last:

500G/(200M/H*24H*4ch*4) =6.5 days,

My DVR froze after a period of time. I cannot use any control on the DVR.
If the DVR controls are no longer operating but the recording light is flashing. The best action to take is to turn the DVR power off, wait for 5 seconds, then turn the power back on. The DVR will resume operation. If the problem persist, please contact our technical support for further assistance.
I cannot view my DVR from the outside. What should I do?
1.Make sure you can view your DVR from your internal network.
2.Verify that your Public IP address can be "PING" from an External Network.
3.Log on to the Admin Console of your Router/Access point provided by your Internet Service Provider.
4.Navigate to Advance Network Setup and find "Port Forwarding" or "Pinhole".
5.Create a Port Forward rule that pertains to the HTTP port specified in your DVR.
6.Make sure the IP address of the Port Forwarding rule is the IP address of the DVR.
7.Save the Rule and restart the router/access point.
8.Log back onto the Router/Access point and make sure the Port Forward Rule applied.  If not, repeat step 4 thru 7.
9.Access the DVR from an External Network by using either Internet Explorer or the Client Software accompanied by the DVR.
I suddenly cannot access my DVR from the outside.

You may have an IP address conflict.  Your internal IP address of your DVR might be in conflict with another machine on the same LAN.  Please adjust the range of your DHCP server of your router to exclude the IP address of your DVR.  Restart your Router, then restart your DVR and any machine on your LAN.

Error message, "Connection Fail!(2), Reason: (-3)no stream timeout"
Power Down your DVR by switching the On/Off switch at the back of the DVR to OFF position Unplug the Power Cable of the DVR.
Wait for 3 seconds then reinsert the Power Cable back into the DVR. Switch the On/Off switch to ON position. Power Down your DVR by switching the On/Off switch at the back of the DVR to OFF position Unplug the Power Cable of the DVR.
Wait for 3 seconds then reinsert the Power Cable back into the DVR. Switch the On/Off switch to ON position.
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