Server Redundancy

Server redundancy can be achieved by two different methods, MX-ONE n+1 or VMware HA. Using either method will virtually eliminate the impact on availability from server failures as can be seen from the calculations in Availability Calculations.

The VmWare HA have a quicker change over time than n+1 but the important benefit is the fact that adds, moves and changes are allowed when a back-up server is active.

N+1 redundancy is an active/standby configuration, the extra server is standby with programs loaded but no data. In a fault situation, the standby server loads the failed servers data automatically and takes control over its associated media gateways. Any server can access and load static data for any server in the same redundancy cluster.