An NVR, or network video recorder, is a device used to record and store video footage from security cameras. Unlike a traditional DVR, which connects directly to a camera, an NVR receives footage from a network of cameras. This means that it can be located anywhere on the network, making it more flexible and scalable than a DVR. But does an NVR need a hard disk?
The answer to this question depends on the specific NVR and the needs of the user. Some NVRs come with built-in storage, while others require an external hard drive. There are also some that do not need any form of storage, as they stream footage directly to a computer or other type of storage device. Ultimately, it is up to the user to decide whether or not they need a hard disk for their NVR.
1. No, NVRs do not need hard disks. They are designed to work without them.2. NVRs are much more reliable and efficient when used without hard disks.3. Hard disks can actually decrease the performance of an NVR if used.
Frequently Asked Question
Does NVR need hard disk?
Do you need a NVR for IP camera?
The system does work without a hard disk drive. But the problem is that the system cannot record any videos and you are thereby limited to live stream. You won’t have any video footage for the lack of a hard disk. Therefore, a hard disk drive is highly recommended.23 Sept 2021 
If you’re familiar with a traditional analog CCTV set up, you know that your cameras need to be linked to a Digital Video Recorder (DVR) that records, processes, and stores all the data. IP cameras require a Network Video Recorder (NVR) that serves much the same purpose. 
NVRs are a great investment for anyone who wants to improve their home security. While they do not need a hard disk, they are more expensive than DVRs. If you have the budget for it, we say go for it!