Payment & Potential Gain
- Protects against f Byzantine faults in each site for the price of having 3f+1 replicas in every site.
- Box numbers / a total site compromise.
- Read queries are limited to the local site.
- On a network with diameter of 50 ms.
- It takes at least 300 milliseconds to complete 3 wide area round trips used by peer Byzantine replication methods.
- FT Replication engine was shown to be achieve 5 times the performance of 2PC.
- Goal
- > factor of 3 compared with a peer system.