Use caution when combining both XRC and concurrent copy operations on the same storage control for storage controls that do not support hardware bitmapping.
Concurrent copy and XRC both use storage control cache. If you run both simultaneously, you could deplete the cache resources on storage controls that do not support hardware bitmapping. In this case, the storage subsystem may cancel concurrent copy activity. You may instead want to run concurrent copy during low XRC update activity periods, or else run concurrent copy against the secondary volumes of the XRC pair.