Tested and working, wiped of all information. Please see Crystal disk info for health.The Western Digital WD Red 1TB 3.5" HDD WD10EFRX is a NASware 3.0 HDD designed for server storage. It features hot-plug support and a storage capacity of 1TB, making it ideal for use in environments where high storage capacity is required. With a rotation speed of 5400 RPM and a cache size of 64MB, this HDD provides reliable performance for storing and accessing data. The WD Red line from Western Digital is known for its reliability and compatibility with various server storage systems, making it a good choice for businesses looking to expand their storage capabilities.