Hi, I installed CentOS on a 1U server with a SI SATA Controller According to lspci a CMD Technology Inc Silicon Image SiI 3112 SATARaid Controller (#2) (rev 2) The problem is for some reason the system came up without DMA. Of course this means terrible IO performance. Aside from setting it with hdparm is there a way to have it do this on boot? Is this a known issue? Terrence