Maybe i found a way that can work. On www.3ware.com i found this file Red Hat Enterprise WS3 - Intel x86 (drivers only) It contains the following files 3w-9xxx.bot 3w-9xxx.hug 3w-9xxx.o 3w-9xxx.smp Now the question. Is it possible to install these driver in my Centos 3.3 kernel 2.4.21-27.0.2.ELsmp? If yes exactly how? http://www.3ware.com/KB/article.aspx?id=11843 I´ve found this way but i don´t know that it works with centos. Thanks if anyone can help