The Western Digital Ultrastar DC HC330-series provides low to mid-capacity drives that are economical to acquire, yet deliver quick and reliable data access for traditional data center applications. IT managers need to offer storage tiers as they deploy purpose-built solutions to meet their on-prem, off-prem & cloud storage requirements.  While helium filled drives enable the highest capacities, air-filled drives offer important benefits.  With a lower TCA (total cost of acquisition), legacy options, and higher access density (IOPs/TB), they are the perfect choice for maintaining a desired level of performance while allowing customers to tailor budgets to meet their needs. The Western Digital Ultrastar DC HC300-Series help to address data center requirements by providing capacities from 4TB to 10TB while increasing performance over prior generations.  They are designed for a variety of applications including traditional storage arrays, rack-mounted storage enclosures and server-based distributed storage systems, as well as distributed and scalable computing, including block and file storage architectures.  They are offered at 7,200 RPM with either 6Gb/s SATA or 12Gb/s SAS interface in Advanced Format 4Kn and512e format. A 512n option is also available on 4TB models to support legacy systems with native 512-byte block sizes.