This product consists of 2 Hitachi 2TB 7.2K SAS 3.5" internal desktop drives with a 128MB cache. The drives are designed for high-performance storage applications, with a SAS interface and a rotation speed of 7200 RPM. With a storage capacity of 2TB, these HDDs are ideal for demanding computing tasks such as data processing, multitasking, and multimedia storage. The units come in a 3.5-inch form factor, making them compatible with standard desktop configurations.