The Western Digital Purple 3.5" 2000 GB SATA III HDD is a hard drive specifically designed for video surveillance systems. With a 2 TB storage capacity, this HDD provides ample space for storing high-resolution video recordings. It is optimized for continuous 24/7 operation and can handle multiple cameras simultaneously without performance loss. The SATA III interface ensures fast data transfer, while AllFrame technology provides stable video streaming. This drive is reliable, durable, and ideal for use in security environments.