The new Moonshot servers ship with Canonical’s Ubuntu Linux pre-installed, as well as a stack of software from ngnix that includes memecache and other web programs. IBM’s Informix is also offered as an option - the only commercial database currently available for Moonshot..
http://www.pcworld.com/article/2688912/hps-moonshot-server-now-packs-64bit-arm-chips.html
http://www.pcworld.com/article/2688912/hps-moonshot-server-now-packs-64bit-arm-chips.html