HPE 881781-S21 is a 12TB hard drive for adding high-capacity storage to a compatible HPE server. Its large capacity suits data sets and files that need to remain on server storage.
The drive uses a SAS interface with a stated transfer rate of 12Gb/s and spins at 7,200 RPM. It is built in 3.5-inch LFF format with a Low Profile Carrier (LPC), so its form factor is clear for server storage configurations.
The listing identifies HPE Gen 10, Gen 10+ and Gen 11 server generations for this model. HPE QuickSpecs lists 881781-B21 as the associated 12TB SAS 12G Midline 7.2K LFF OEM reference.