Recently I am disappointed with my IBM x3250 M3 run CentOS linux, the performance is very bad. After investigate I found my SATA drive ( I use two SATA hard drive , 250GB and 500GB) detected by CentOS as IDE drive, as hda and hdb. When I test read and write speed used “hdparam”, the result was terribel , it’s below 10MB/s

Today I re-check the BIOS configuration, under System Setting the only option of SATA drive is “configure SATA as IDE” and I try change the mode from “Compability Mode” to “Native Mode”. I save the BIOS configuration and reboot the server, and the result is very fantastic, now my two harddrive detected as SATA, it recognized as sda and sdb , I am very right now. I test with “hdparam” the speed impressive :)

/dev/sda:
Timing cached reads:   27160 MB in  1.99 seconds = 13620.52 MB/sec
Timing buffered disk reads:  338 MB in  3.02 seconds = 112.07 MB/sec