In the many-to-many synchronization pattern each replica exchanges
packets with all other replicas.
Figure 1. Many-to-many synchronization
pattern
Advantages:
- For companies with few sites, this pattern keeps each replica’s epoch
table the most accurate for all siblings.
- If one site is unavailable, the other sites do not have to change their
patterns to continue synchronizing.
Disadvantages:
- Each administrator must maintain more synchronization jobs and spend more
time keeping track of packets.
- Packets can be larger.