The Sun Server X4-2 Installation Guide for Linux Operating Systems that is included on the Oracle System Assistant USB flash drive, which is embedded in the server, does not list the supported versions some of the Oracle Linux and Red Hat Enterprise Linux operating systems correctly. The correct versions are:
For Oracle Linux: 5.9, 5.10, 6.3, 6.4, 6.5, and 7.0.
For Red Hat Enterprise Linux: 5.9, 5.10, 6.4, 6.5, and 7.0.