As of supplemental Software Release 2.8.1, the Sun Fire X4170, X4270, and X4275 Servers support the following operating system editions.
Oracle Unbreakable Enterprise Kernel Release 2 for Oracle Linux 5.11
Oracle Unbreakable Enterprise Kernel Release 3 for Oracle Linux 6.6 and 7
Oracle VM 3.3.1
Refer to the Sun Fire X4170, X4270, and X4275 Servers Linux, VMware, Solaris, and OpenSolaris Operating Systems Installation Guide (820-5828) for installation instructions for the operating systems listed above, and a complete list of operating systems supported.