The Western Digital Purple 4TB Internal Hard Drive is purpose-built for surveillance applications, offering reliable storage for critical video footage. With a spacious 4TB capacity and a standard 3.5-inch form factor, it provides ample room for recording surveillance data. Its SATA 6 Gb/s interface and 5400 RPM speed ensure smooth data transfer rates, while the 64MB buffer enhances overall performance. Featuring a transfer rate of 175MB/s, it efficiently handles high-definition video streams. Designed for continuous operation, it consumes 15W of power, making it suitable for 24/7 surveillance systems. With dimensions of 147 x 101.6 x 26.1mm, it fits seamlessly into surveillance setups. The WD Purple 4TB HDD is engineered to withstand elevated heat fluctuations and equipment vibrations, ensuring reliability in NVR environments. It has an annualized workload rating of 180TB/yr and is compatible with up to 64 cameras per drive. The drive is backed by a 3-year warranty and is made in Thailand/Malaysia with components from the USA, ensuring quality and reliability for surveillance applications.