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Western Digital ULTRASTAR series hard drives are designed for a variety of applications: traditional storage arrays, server applications. The drives feature a 7200 RPM, 6 Gbps SATA interface.

Technology innovations improve efficiency and performance in traditional and legacy systems. The Ultrastar DC HC300 Series 3.5-inch drives are based on proven, cost-effective air-filled HDD technology and conventional magnetic recording (CMR). These HDDs leverage popular hardware and firmware, yet they feature a second-generation dual microservo for improved head positioning accuracy and drive performance. Moreover, write speeds benefit from Western Digital's media cache architecture, a drive-based cache technology that ensures that ample temporary memory space is available and it improves reliability and data integrity. Meanwhile, the addition of non-volatile memory (NVC) flash in both SATA and SAS models helps improve write performance.

Western Digital hard drives are recommended by all leading manufacturers of CCTV equipment.