The WD Purple 6TB Internal HDD is designed specifically for surveillance systems, offering reliable storage for continuous video recording. With a SATA III interface and 256 MB cache, it ensures smooth data transfer and efficient performance. Its 3.5-inch form factor fits standard desktop setups, making it an excellent choice for expanding your surveillance storage capacity. This hard drive supports up to 64 HD cameras and features enhanced workload ratings for durability in 24/7 operation environments. The drive is brand new and comes with original tags, ensuring quality and authenticity.