WESTERN DIGITAL Ultrastar HC310 4TB SAS

Ultrastar DC HC310 is based on a new 4-disk air platform design that
uses conventional magnetic recording (CMR) technology in a 3.5-inch
large form factor. Compared to the prior generation, Ultrastar 7K6000,
the DC HC310 delivers a 12% performance boost and uses slightly
larger-diameter media. It features a second-generation, dual-stage
micro actuator to enhance head positioning accuracy for better drive
performance. Write performance gains are also supported by Western
Digital’s media cache architecture, a disk-based caching technology that
provides a large cache area on the disk, which also improves reliability
and data integrity during unexpected power loss. Finally, the addition
of fl ash-based non-volatile cache (NVC) on both SATA and SAS models
helps improve write performance. The Ultrastar DC HC310 also includes
a Rebuild Assist feature, which helps dramatically reduce RAID rebuild
times and maintain system performance during the rebuild process.
Learn more in our Rebuild Assist technical brief.