IIS 7 and Above
Application Request Routing (ARR)
Maximum WebFarm in a ARR 3.0
Last post Aug 23, 2016 02:31 AM by Rovastar
Aug 09, 2016 05:21 PM|Cedric Boivin|LINK
I want to know how many server farm (webfarm) i could configure in one IIS server. It's there some recomandation about that. Minimum material requirement, benchmark or something else?
Aug 10, 2016 08:47 AM|Jean Sun|LINK
ARR 3.0 allow one server to be added in multiple server farms. However, if you are trying to add one server to second server farm, a rewrite rule conflict information will occurs.
We recommend you use only one web farm for one server otherwise the target for load balance will not be accessed.
Aug 23, 2016 02:31 AM|Rovastar|LINK
Sorry Jean I am unmarking this as an answer.
You can have many web farms containing many servers.Currently I have an ARR server with about 20 farms hitting about 8 different servers with each farm with 1-3 servers.
As for a limit I am not sure. I expect hundreds or thousands I have never tested that far.
It all depends on your rewrite rules about what traffic hits each server.
The default wizards do not give the best performance or flexibility. Most people that use ARR in the wild to any degree do not use these wizards and configure separately.
To understand ARR I suggest to watch and understand Scott Forsyth's video series starting here
Maybe I need to do a separate walkthrough guide on this also.