Hikvision restore from microSD backup

[hooos]

My setup consists of DS-7716NI-M4/16P and 4x DS-2CD2387G2H-LIU (with microSD cards installed) cameras are connected to the NVR via a LAN

Three cameras have been offline from the NVR (but still powered up) for a few hours. The three cameras are now back online and accessible through the NVR. I'd like to view the missing footage (that has hopefully been recorded onto the sd cards). Questions that I have:

1. How can I access the missing footage without physically removing the SD card?
2. Will the NVR automatically download the missing footage once reconnected? Does this need to be configured somewhere?

Thanks in advance!

 

[JB1970]

My setup consists of DS-7716NI-M4/16P and 4x DS-2CD2387G2H-LIU (with microSD cards installed) cameras are connected to the NVR via a LAN

Three cameras have been offline from the NVR (but still powered up) for a few hours. The three cameras are now back online and accessible through the NVR. I'd like to view the missing footage (that has hopefully been recorded onto the sd cards). Questions that I have:

1. How can I access the missing footage without physically removing the SD card?
2. Will the NVR automatically download the missing footage once reconnected? Does this need to be configured somewhere?

Thanks in advance!

1 - If you previously set up a recording schedule directly on the camera (rather than just on the NVR), you'd need to connect to the camera (not NVR) directly with a web browser (or iVMS) and playback from there. If there isn't a recording schedule set directly on the camera there will be nothing there to view.

2 - Not unless configured. In the NVR Storage > Storage Schedule > Advanced menu you would need to have switched on ANR. With that in use, when the camera regains access network access to the NVR, the NVR copies the data from the camera back to the NVR. While that's going on footage is played back directly from the camera. Progress of the copy back can be seen in the playback timeline.

 

[hooos]

Hi JB1970

Thanks for the message, I've got ANR up and running now and it is restoring the footage as expected. Thanks for your help!

So from my experimentation it looks like the recording to SD card only kicks in once the network connection has been lost - is this right? If so it is a good backup for network failure but not so good if the NVR was stolen/damaged - have I got this right or have I missed something?

 

[JB1970]

Hi JB1970

Thanks for the message, I've got ANR up and running now and it is restoring the footage as expected. Thanks for your help!

So from my experimentation it looks like the recording to SD card only kicks in once the network connection has been lost - is this right? If so it is a good backup for network failure but not so good if the NVR was stolen/damaged - have I got this right or have I missed something?

I've not messed around too much>. Perhaps if you only turn on ANR in the NVR storage menu it only records to the SD card when the network is lost. Try setting a 24/7 continuous schedule in the camera so that it's recording to both the NVR and the SD continuously (as ANR alone will not set that)

 

[hooos]

That's exactly it! Thank you! So I've now found that if no camera-side schedule is selected, a network outage triggers the camera to record to SD only for the duration of the outage. Whereas if a schedule is selected, the camera records continuously (as would be expected) "in parallel" to the NVR.

Not really sure why anyone would not want to record to SD as a backup in the event of theft/damage to the main NVR - but this is the default position - so another process to enable when setting up new cameras

Thanks again for your help JB1970

 

[JB1970]

Not really sure why anyone would not want to record to SD as a backup in the event of theft/damage to the main NVR - but this is the default position - so another process to enable when setting up new cameras

I suppose it's of limited use for those with NVR PoE port connected cameras, as the cameras are down once the NVR is removed so only footage up to that point is available.