Seagate Barracuda ATA II ST330630A
The drives provides more than 29 Mbyte/s over the first third of the medium. It steadily drops to 24 between 10 and 20 GBytes and is between 24 and 18 MByte/s within the last third of the drive.
The data transfer speed in Windows 2000 is almost the same as that in Windows 98. Please consider that the drive only needs 22% CPU time in Windows 2000, while this time is about 39% in Windows 98.