A.AIX v5.1 B.AIX v4.3.3 C.SuSe Linux Enterprise Server 9 (SLES9) D.SuSe Linux Enterprise Server 8 (SLES8)
A.POWER5 supports multiple operating systems. B.POWER5 supports more nodes in a clustered environment. C.POWER5 hypervisor has significantly less overhead than hardware partitioning. D.POWER5 has greater granularity of resources such as memory, processors and I/O.