|Getting Started with GemFire XD / Upgrading GemFire XD|
This topic describes the compatibility rules for deploying different versions of Pivotal GemFire XD.
See Performing a Rolling Upgrade for more details about how to upgrade your system between major versions without taking your entire cluster offline.
GemFire XD clients can run an older version of GemFire XD and still connect to GemFire XD servers running a newer version. In other words, a client running GemFire XD 1.0 can connect to a server running GemFire XD 1.4. Newer clients such as GemFire XD 1.4 clients, however, cannot connect to servers running older versions of the product.
In multi-site (WAN) deployments, you can run different major versions of Pivotal GemFire XD on the different sites and the sites can still communicate with one another.