First of, we start with cache data transfer rate measurements made with h2benchw and the « Core Test ». All tests were made with hard drives configured in SATA 3 Gbits /s. This isn´t the initial configuration of the Seagate 7200.10 (a jumper had to be removed) and the 7K500 (to be activated via Feature Tool). The Seagate drives have the fastest cache, followed by Hitachi and Maxtor. The Western’s performances are low since it only exploits half of the available bandwidth.
The sequential transfer rates of 500 GB drives, represented here from the first to the last GB, is surprising, because it isn´t in complete correlation with the density announced by manufacturers. The 7200.10 is the fastest followed by Western. Also, if the Hitachi drive and the 5 platters of 100 GB is logically one the slowest, it’s equivalent to the 7200.9 and its four platters.
Now here are the maximum, average and minimum sequential transfer rates for all hard drives. The 7200.10 is the fastest with 60 to 61.8 MB /s on average and 74.9 to 76.3 MB /s at top speed: the 750 GB is logically a little faster than the 500 GB since it uses platters of a higher density (187.5 GB as compared to 167 GB). Western is just behind followed by Maxtor. With 47 MB/s on average, the previous generation of hard drives such as the 7K500 and 7200.9 are clearly slower.
For seek time, however, the 7K500 is much better and finishes in first position. Maxtor is last and the Western and Seagate are approximately equivalent.