Before installing an Oracle Solaris 11 release, refer to the following requirements:
Memory – The minimum memory requirement for installation is 1 GB. The Live Media ISO image and both the GUI and text installers are capable of functioning with a limited amount of memory. The exact requirement varies, depending on specific system specifications.
Hardware – Any supported SPARC or x86 platform. See http://www.oracle.com/webfolder/technetwork/hcl/index.html.
Virtual memory – If you want to install an Oracle Solaris 11 virtual image on Oracle VM VirtualBox, refer to the memory requirements that are listed at http://www.oracle.com/technetwork/server-storage/solaris11/downloads/virtual-machines-1355605.html.