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.