Choosing the right hard drive is important when building or upgrading a CCTV DVR or NVR system. Not all hard drives are designed for continuous security recording, and selecting the correct storage size can improve reliability and recording performance. Higher-resolution security cameras require more storage space, with 8MP cameras using significantly more hard drive capacity than lower-resolution 2MP systems. Dr Lock Shop stocks CCTV hard drives and storage solutions suitable for residential and commercial security camera systems.