We are currently working to design a DR site with site to site data replication via Oracle products.
CWDM and DWDM seems interesting but I would like to know how does the commucation over these solutions happen. Is it over IP network with IP source/target addressess or something else. What is the protocol used.
Secondly, we are looking for 40Mbps bandwidth over fibre between Active and DR site. Is CWDM/DWDM the right option. Or there could be other options like through plain routing via edge routers between the data center.
Recently i setup replication between 2 datacenters that were about 35 miles apart. We had a DWDM/PtP between them running at 10Gbits total bandwidth. I had a 2Gbit slice of that. the latency of that DWDM and the speed of my connection allowed me to run a simple ISL between the 2 sites. Nothing special required. just built a channel and trunked it. Worked great. Just thought i would share a past experience in case it is in line with what you are trying to do.
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