Supported operating systems:

As of Confluence 2.8 and later, zOS, AIX and HPUX are not supported - only supporting x86 processors.

Basically Confluence works on any OS that has J2EE 1.4 support (Refer to the Java 1.4 Support Timeline). If you can get Confluence running on an unsupported operating system we will still try to help you if you encounter problems, but we may ask you to move to a supported operating system before we can provide more detailed support.

Related topics:

Virtual Environments such as VMware are unsupported and not recommended due to performance problems.These performance issues are especially significant for clustered Confluence.