Typically required because of upgrades to hardware and operating systems. Use of same installation directory and ports can minimize change. Use of DNS to control IP-to-host mapping for the old and new environment can greatly simplify impact on external clients.

Benefits: Safest scenario, and minimal downtime. Easiest scenario when environment runs in a private or public cloud that allows temporary increase of capacity to host new environment and then release resources used by old environment. Can phase migration. Must adjust third-party tooling to new installation. Can fully automate using custom composite templates or can perform step by step using a combination of the Command Central web user interface and commands.

Cautions: Some products allow cross-operating system migration, but for other products, this type of migration might have unpredictable results, especially when old machine is Windows and new machine is non-Windows, or vice versa.