Global High Availability (Global HA) facilitates global high availability with load distribution and disaster recovery capabilities across the SMA appliances in the GTO service. The high availability can be deployed in a single datacenter or across dispersed data centers.
Global High Availability replaces the HA Pair model. Secure Mobile Access version 11.4 is the last version of SMA that supports HA Pairs. See the Global High Availability Versus HA Pair table for a comparison of the two models.