- The HADR Synchronous mode is very important, and has a large dependancy on the network bandwidth/latency.
- SYNC or Near SYNC modes are dependant on the network, while with ASYNC, there are no network dependancies.
If you are using SYNC/Near-SYNC mode, then you should work on your peak logging rate. 200MB/day comes out to 2.3KB/secs. With a 64kbps line, this is the same as 8KB/secs.
So in theory you have enough capacity, but the 2.3KB/secs is an average number, you are likely to have huge peaks in there.
You also need to understand the network latency, and add that to the round trip (if SYNC/Near-SYNC) to determine if the solution is viable.