Release 10.1B: OpenEdge Replication
User Guide
Determining OpenEdge Replication network bandwidth
There is additional replication overhead that is required to transfer the after-image blocks over the wire to the target system. This additional overhead is estimated at ten percent and consists of header and control information for replication.
Items that are included in this calculation include but are not limited to:
- Packaging of blocks. Replication adds overhead to each AI block.
- The database default after-image block size of 8K. Changing the after-image block size to 16K would mean fewer messages are sent, which would lower the network activity by approximately five percent.
- Standard communication between the OpenEdge Replication agent and the OpenEdge Replication server.
Determining network bandwidth can be difficult. Consider that a T1 line provides approximately 1.544 megabits per second of throughput. This value represents the theoretical limit; however, the value is typically somewhat less than this due to routers, hubs, and switches.
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