Complete failure where the drive is no longer recognizable to your DVR, unrecognizable to a PC as well, and warrants replacement.These bad sectors can be physical which will warrant replacement of the drive, or read write errors which can be corrected with a simple drive format from with the DVR user menu.
But when errors do happen, or the drive fails and drops out on the DVR you will get a error notice on your DVR stating there has been a hard drive failure. You simply don't know when it will happen. And an error occurring once on a particular brand and model of hard drive does not mean that manufacturer or model is bad. It is not possible to predict drive life, or prevent an incidence from occurring. Errors can occur on a new drive or one that has been functioning well for over 2 years. Taking in to consideration how fast they are moving, and that there is a small needle reading data from the drive platters, sort of like an old record player, it is possible to have a hiccup in the incredibly delicate process happening inside of your DVR's hard drive. Hard drives have spinning discs (or platters) inside which are constantly rotating at 5400rpm or 7200rpm. However, Harbor Freight does sell extended warranties if you need extra peace of mind.It is not uncommon to have a hard drive error on your Security DVR or Network Video Recorder (NVR). Was built by RDI Technologies in China, so support may be limited. I can also access the recordings from my IPhone. Set up to record when motion was detected on the cameras. Installing the SD card allows recording of a camera. Did not come with a memory card, so to Walmart I went. Selected pair and push the pair button on the back of the camera after a message to do so appeared on the screen, and presto I could see 4 cameras on the monitor. To add the third and fourth cameras, I had to go to the menu option to pair them to the receiver. Back to Harbor Freight for two more cameras to make the maximum of 4 wireless cameras. Used the app away from my home network and it worked fine. Downloaded the app and I could see the cameras, as it automatically found my receiver. Turned the receiver on and off again per instructions and I was connected to the internet. Plugged the power to the receiver and video showed up on the monitor. I plugged them into power and then connected the receiver to the router using supplied cables.
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