PTC now supports changing hardware during the upgrade, but with the limitation that sites stay on the same operating system (OS) platform (for example, Microsoft Windows on both new and old hardware, or UNIX on both the new and old hardware. PTC will not support switching from Windows on the old hardware to UNIX on the new hardware).

If an OS platform change is needed, it should be performed as a separate activity and prior to the upgrade, if possible. It is recommended that you perform the rehost and ensure the rehosted system is functional before performing any other changes to the Windchill system. PTC tries to ensure long-term compatibility of supported platforms but due to release cycles of these components, it may be necessary to rehost after the windchill upgrade. For more information, consult PTC Technical Support.

For more information about rehosting, see Windchill Rehosting Utility Guide.