To upgrade a composite Security Center system involving Global Cardholder Synchronizer (GCS) roles, you must upgrade the sharing host system first, then upgrade the sharing guest systems.
Back up the Directory databases
of your and
systems.
The Global Cardholder Synchronizer role ensures the
two-way synchronization of shared cardholders and their related entities between the
local system (sharing guest) where it resides and the central system (sharing
host).
For more information, see Global cardholder management.