FusionPBX Cluster Comparison

Fault Tolerance

	Failure Sensitiveness	Time to Recover Back	Easiness To Recover Back
Simple Failover
Simple Failover (variant 1)
Simple Failover (variant 2)
Load Balanced
Highly Available
Highly Available (variant 1)
Enterprise

• Failure Sensitiveness: how sensible is the configuration that a given event may switch the tolerance mechanism. The more stars, the more sensible. The fewer stars, the better (more resistant).
• Time to Recover Back: when an event happens, how long does it take to recover and return to a normal operation state. The more stars, the longer. The fewer stars, the better.
• Easiness to recover Back: after an event happens, how big is the effort to return to a normal operation state. The more stars, the harder. The fewer stars, the better.

Deployment

	Easiness to Deploy	Time to Deploy	Expensiveness to Deploy	Can have SBC?	Minimum required Servers
Simple Failover				Yes	2
Simple Failover (variant 1)				Yes	3
Simple Failover (variant 2)				Yes	2
Load Balanced				Yes	5
Highly Available				Yes	5
Highly Available (variant 1)				Yes	6
Enterprise				Included	7

• Easiness to Deploy: How easy for a seasoned system administrator is to set up the given architecture. The more stars, the easiest. The fewer stars, the harder.
• Time to Deploy: How long does it take. The more stars, the longest. The fewer stars, the shorter.
• Expensiveness to Deploy: Relative cost compared against others architectures. The more stars, the more expensive. The fewer stars, the cheaper.
• Can have SBC?: If this architecture supports the SBC add-on.
• Minimum number of Servers to Deploy: Some of these architectures may have more servers. These number represents the minimum quantity needed to do the proper deployment.