HGST 24TB Ultrastar DC HC580 SAS 12Gb s SED 3.5" Data Center Hard Drive from Western Digital

This is the SED model.

The 24TB Ultrastar DC HC580 SAS 12Gb/s 3.5" Data Center Hard Drive from Western Digital with improved OptiNAND technology is the next step in high-capacity hard drives, allowing data centers to maximize their storage, especially in footprint- and power-constrained environments. It provides more efficient storage on its 10-disk CMR drive, enabling you to store more in the same footprint. Improved OptiNAND technology, energy-assisted magnetic recording (EAMR), triple stage actuator (TSA), and HelioSeal enable high capacity with low power. Plus, ArmorCache is a feature enabled by OptiNAND that offers higher performance in write cache disabled mode and provides enterprise power loss protection in write cache enabled mode.