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All DVRs store their footage on an internal hard drive. Most use a SATA hard drive, this stands for Serial Advanced Technology Attachment and is the method by which the hard drive connects to a device. Computers also use a SATA hard drive but DVRs and computers are different. Unlike a computer, your DVR is designed to run 24 hours a day with constant data transfer onto the hard drive. For this reason, it is important that you use AV grade drives specifically designed for a DVR rather than standard computer drives which have a tendency to fail prematurely.
We sell hard drives separately to the DVR because storage requirements vary between customers. If you purchase a DVR and a hard drive from us at the same time we will fit the drive into your DVR, format the hard drive for you and then configure the basic settings of the DVR so it arrives plug & play. This saves you time and means everything works properly out of the box.
There are a number of factors that will determine this. The main things to consider are:
Recording quality. The higher the quality the less time a given hard drive will record for. 4K produces 5 times more data than HD 1080p.
The number of frames per second you record at. This is something you can change without compromising your CCTV system. See the section covering real-time DVRs.
The number of cameras you have on your system. Each camera requires space for its footage to be stored.
Length of time footage is stored on our 4K IP NVR recorders at 6 frames per second using the H.265 codec.
Tip
Because of the amount of storage required for recording 4K images it may be worth considering the the 2K camera range for short range or less essential areas where a general overview can be used rather than detailed identifying footage.
