My RAID controller is: HPT372 UDMA/ATA133 RAID (last software version) I have two HardDisk on RAID: the first is Maxtor 120gb 7200rpm ATA133 8mb of buffer (connected on IDE3). The second is 120gb Seagate 7200rpm ATA100 8mb of buffer (connected on IDE4). RAID 0, Block size: 64k Motherboard: ABIT K7D-RAID (with last bios) Take a look at this test. Mainly the write speed! What could causing this ?