Posted on Thursday, April 17 2008 @ 7:27 CEST by Thomas De Maesschalck
The Ultrastar 15K450 is a performance leader, with Hitachi tests indicating a 30 percent improvement in sequential throughput over its predecessor. The drive features average seek times as low as 3.3 milliseconds and the fast rotational speeds reduce average latency time to 2 milliseconds, enabling customers to access data more quickly and efficiently. The new drive will ship with either 3Gb/s Serial Attached SCSI (SAS) or 4Gb/s Fibre Channel (FC) interfaces.
The Ultrastar 15K450, which is built on a mature design platform to ensure greater reliability and reduced qualification times, offers a host of industrial-strength technology for proven reliability in mission-critical, server-class environments. Technologies such as fluid dynamic bearing motors deliver a low acoustic rating and improved data integrity, and Rotational Vibration Safeguard (RVS) technology anticipates disturbances that can occur in multi-drive configurations and counteracts them. In addition, the Ultrastar 15K450 uses Hitachi's patented head load/unload ramp to minimize integration induced drive damage.
Technical Specifications Ultrastar 15K450:
450GB (GB = 1 billion bytes, accessible capacity may be less)
183 billion bits per square inch maximum areal density
4 platters, 8 recording heads
2090 Mb/s max. media data rate
3.6 ms average seek time (with command overhead)
15,000 RPM, 2.0 ms average latency
3Gb/s SAS, 4Gb/s FCAL interfaces
16 MB data buffer
25.8 mm in height (max)
750 in weight (max)
250 G/2 ms pulse non-operating shock
SAS: 13.3 watt idle power
FCAL: 13.4 watt idle power
3.7 Bels typical idle acoustics
5 to 55 degrees C operating temperature
