Hardware Requirements

To configure SunScreen with HA, you need additional hardware for the secondary systems. For HA, you need at least one secondary system, but you can have as many as 31. The hardware for an HA configuration depends on the amount of traffic it is expected to filter and the overhead for processing the traffic. This overhead depends on the number of rules in a policy, encryption, and the like. All the hardware in the HA cluster, ideally, should be the same because they all must process the same volume of data. The network interfaces must be of the identical type (for example, qfe) and the have identical names (for example, qfe0).