Hitachi is adding three new 7,200 RPM drives to its family of Deskstar products, targeting the range of 3.5-inch consumer and commercial applications: mainstream PCs and workstations, digital video recorders (DVRs), nearline storage and other enterprise ATA applications.
The Hitachi drives being released include the industry’s first half terabyte (500 GB) Serial ATA (SATA) drive for audio/video and other capacity-intensive applications – the Deskstar 7K500. In the mid-range category, Hitachi offers the Deskstar T7K250, a two-disk, 250 GB product, while the Deskstar 7K80 rounds out the portfolio with an 80 GB offering, targeting the most popular capacity point.
The specs for te 7K500 (500GB) include 817 Mb/s max. media data rate, 8.5 ms average seek time, 7,200 RPM, 4.17 ms average latency, ATA-100/Serial ATA 3.0 Gb/s.
The company is also delivering some of the major design enhancements identified in the SATA II specification, including a 3 Gb/s data transfer rate increase across all three of the new drives. The new transfer rate represents a doubling of the previous SATA 1.0 rate and rivals that of enterprise-class SCSI drives.
Hitachi has also announced advances in perpendicular recording technology that would allow 20 GB microdrives or 1 TB 3.5 inch drives.
The new Deskstar drives all feature a single-chip, native SATA chipset and Native Command Queuing (NCQ), which enables fast data transfer rates for enterprise ATA and other performance-based applications. NCQ is a method of controlling commands sent from the host processor to the drive to enable faster application activities for the end user.
The drives include another key feature of SATA II, staggered spin-up. Staggered, or delayed, spin-up enables the host to individually “spin-up” drives in multi-drive configurations. This reduces the power draw of a booting system, enabling system designers to reduce the size of the power supply and minimize the total cost of ownership for end-users.
Hitachi is currently shipping the Deskstar 7K80 and expects to begin shipping the Deskstar T7K250 and Deskstar 7K500 in Q1 2005.