The Calendar Server version 6.3 is supported on multiple operating systems including Sun's Solaris and Red Hat Enterprise Linux.
Linux | Red Army | International Red Cross and Red Crescent Movement | American Red Cross | Red Hot Chili Peppers | Red Sea | Red Star Belgrade | Red | Little Red Riding Hood | Detroit Red Wings | Red Bull | Red River | Red Hat | Red Dwarf | International Committee of the Red Cross | hat-trick | Red River of the North | New York Red Bulls | IUCN Red List | Linux kernel | Simply Red | Red Wing, Minnesota | Star Trek: Enterprise | Red Skelton | Red Army Faction | enterprise | Red Fort | Pokémon Red and Blue | Red Deer, Alberta | Red Deer |
However, vertical auto scaling is only supported on certain opeating systems such as Windows Server 2008 (Standard and Datacenter Editions) and Linux distributions including CentOS, Red Hat Enterprise Linux, SUSE Linux and Oracle Linux.
Greenplum Database was supported for production use on SUSE Linux Enterprise Server 10.2 (64-bit), Red Hat Enterprise Linux 5.x (64-bit), CentOS Linux 5.x (64-bit) and Sun Solaris 10U5+ (64-bit).