The Internal 1Tb WD Purple 3.5" is a high-performance hard drive designed specifically for surveillance systems. With a massive storage capacity of 1 terabyte, it can hold hours of high-quality footage. Its advanced firmware technology helps reduce video interruptions and frame loss, ensuring that you never miss a moment. This hard drive is perfect for small to medium-sized businesses looking for reliable and efficient surveillance storage solutions. It is also compatible with a wide range of security systems, making it a versatile choice for any surveillance setup.