exceptions

I purchased a few of these Hikvision PoE cameras and, unlike my other Hikvision PoE cameras, all of these cameras report Network Disconnected Exceptions in their logs every 1-3 minutes. My managed PoE switch reports the ports the cameras are using going off-line every 1-3 minutes and coming...

A friend has a DS-7608NI-SE8P. The hdd management screen shows zero space available. He is getting exceptions and turns the unit off when he is on-site, because it constantly beeps. When I access the unit remotely -I don't see any options to allow old data to be written over. When I go...