Peter Peltonen wrote on Thu, 10 Mar 2011 10:12:48 +0200: > Should this controller be supported by CentOS5.5 without a driver disk? Yes, but maybe not in this specific card. For instance, I get this from lspci: 02:00.0 SCSI storage controller: LSI Logic / Symbios Logic SAS1068E PCI- Express Fusion-MPT SAS (rev 08) See, it mentions MPT. The built-in MPT driver works fine with it. This one may need an LSI-provided MegaRAID driver. You should ask SuperMicro about this. Assuming that they support RHEL they should be able to tell you if you need exctra drivers or you can use the driver coming with the system. Kai