The error you are getting is because the machine is not getting enough space due to the missing Raid driver/Raid itself .
here is a step by step http://docs.oracle.com/cd/E22368_01/pdf/E22364.pdf
Hopefully it will solve your problem and for the Missing driver please try to look for them here :
http://www.lsi.com/products/storagecomponents/Pages/LSISAS9211-8i.aspx
Hope this will help
Best regards
Your Oscar