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Hello,
I have an On premise Dynamics 365 9.0 installed on 4 servers.
2 FE servers and 2 BE servers.
My question is that how does FE select the BE that will execute the sandbox requests for?
Is it FE1 --> BE1 and FE2 --> BE2 ?
Thank you
Hello Osama,
Hope you are well.
We can consider sandbox as a service and then we have clients calling sandbox. A client can be the frontend w3wp website or async service itself for example.
Without going into much detail and because that information is not documented, each client, for example FE1, will keep its own always updated list of healthy sandbox servers. Then it will decide where to send a sandbox call based on a round robin algorithm.
Each client will keep its own roundrobin state without knowing the others roundrobin state.
On your case FE1 will roundrobin between BE1/BE2 and so will FE2.
This is true even if you have 2 FULL servers. FE role on server 1 will call round robin between BE(sandbox) on server 1 and BE on server2.
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