Going the SAS Storage Way

Hitachi UltraStar 15K147 SAS (HUS151414VLS300)

Hitachi Global Storage Technologies hasits own enterprise drive for high-performance environments. The UltraStar 15K147 runs at 15,000 RPM and comes with 16 MB cache like the Fujitsu drives, but it has different platter configurations. The 36.7 GB model uses two rather than one platter, and the 73.4 GB drive has three rather than two. Although this indicates a lower data density, the design, in fact, avoids the use of the inner, slower area of the magnetic platters. As a result, the distance that the heads have to cover may be smaller, which can result in better average access time.

Hitachi also has 36.7 GB; 73.4 GB and 147 GB models with a purported read seek time of 3.7 ms for all models.