The refurbished HPE 691866-B21-RFB is a solid-state drive for enterprise server storage. It corresponds to option part HPE 691866-B21 and is designed for systems that use a compact server drive format.
It provides 400GB of storage and uses SATA with a 6 Gb/s data-transfer rate. The 2.5-inch SFF form factor fits server bays designed for small-form-factor drives, while the SATA SC configuration means it is supplied in a SATA SmartDrive Carrier format.
The underlying HPE specification identifies it as a Mainstream Endurance SSD for mixed-use enterprise workloads, including server operating systems, application data and regularly accessed business files. Its solid-state design makes it suitable for expanding or replacing storage in compatible enterprise server systems.