Hewlett Packard Enterprise 861681-B21 Hard Disk Drive

The Hewlett Packard Enterprise 861681-B21 is a 2TB SATA 6Gb/s LFF (3.5-inch) hard disk drive designed for enterprise servers and storage arrays, delivering cost-effective bulk data storage with reliable access for data-center workloads such as backups, archiving, and general file storage. It spins at 7,200 RPM, supports hot-swap, and is engineered for midline (MDL) workloads in HPE ProLiant Gen9 and Gen10 servers and compatible storage systems, featuring a low-profile (LP) design to fit dense server configurations. Common use cases include backup, archival storage, file servers, surveillance storage, and other large-capacity data applications, offering predictable performance for large-scale datasets and easy capacity expansion within existing HPE environments. This drive is identified by part numbers 861681-B21 and 862132-001, and the HPE replacement ecosystem lists options such as 872475-B21 (2TB SAS 12G 7.2K LFF HDD) along with 861678-B21 and P01366-B21 (4TB SATA 6G 7.2K LFF HDD) for cross-compatibility in mixed deployments.