Sun used the Sparc processor, and the machine had specs ... The operating system was Sun’s brand of Unix, Solaris, now owned by Oracle. Sun’s big competitor for a while was Apollo.

It only states that Supercluster, Linux x86-64, Linux on Arm, Oracle Solaris SPARC (64-bit), Oracle Solaris x86-64 (64-bit), Microsoft Windows x64 (64-bit), HP-UX Itanium, and IBM Power and System ...