Hi everyone; Thanks for the information so far! Greatly appreciated. I've just found this: http://home-tj.org/wiki/index.php/Sil_m15w#Message:_Re:_SiI_3112_.26_Seagate_drivers Which in particular mentions that Silicon Image controllers and Seagate drives don't work too well together, and neither Silicon Image nor Seagate wants to know about or do anything about the problem. Hmm. - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html