You can replace the following CRUs on the nodes:
For CRU locations, refer to Customer-Replaceable Units at http://docs.oracle.com/cd/E62159_01/html/E62171/z400000a1418630.html#scrolltoc.
Additionally, there are FRUs that can be replaced or serviced only by authorized Oracle service personnel. (See Oracle Server X6-2M FRUS.) If an item not listed here needs service, contact your service representative.