WD Purple WD23PURZ 2 TB Hard Drive - 3.5" Internal - SATA - PurpleIn the realm of surveillance storage, reliability, endurance, and intelligent design matter as much as capacity. The WD Purple WD23PURZ 2 TB Hard Drive is purpose built for security ecosystems, delivering dependable performance for DVRs, NVRs, and other surveillance servers. With a spacious 2 TB capacity, this 3. 5 inch internal SATA drive is engineered to handle continuous recording, rapid reads, and the demanding workloads that come with 24 7