The WD22EJRX is a 2TB HDD from Western Digital's Purple Surveillance series, specifically designed for security and surveillance applications. This 3.5-inch SATA hard disk drive showcases a storage capacity of 2 terabytes, making it a robust solution for recording and storing large volumes of high-definition video footage. It operates over a SATA interface with a speed of up to 6Gb/s, ensuring fast data transfer rates. The drive also features a 64MB cache, which helps in improving the performance by reducing the data access time. Engineered for reliability, the WD22EJRX is optimized for 24/7 operation in high-definition surveillance systems. Its capability to handle up to 180 TB/year workload rate and support for up to 64 cameras makes it an ideal component for surveillance DVRs and NVRs.