Ultrastar DC HC670 integrates a suite of technologies on a 10-disk platform to create a new class of HDDs. 26TB¹ is achieved by combining Western Digital’s OptiNAND™ technology with UltraSMR, energy-assist magnetic recording (EAMR), a 2nd generation triple-stage actuator (TSA), and proven HelioSeal® technology.
Combining OptiNAND with proprietary firmware that leverages HDD system-level hardware advancements, Western Digital’s new UltraSMR technology introduces large block encoding along with an advanced error correction algorithm that increases tracks-per-inch (TPI) to enable higher capacity. The result is Western Digital’s new 26TB Ultrastar DC HC670 UltraSMR HDD that delivers up to 2.6TB per platter, offering 18% more capacity for cloud customers optimizing their stacks to take advantage of the benefits of SMR.