IIS 7 & IIS 8
Web Farm Framework
Highly Available Setup: Need Advice
Last post May 14, 2012 06:04 PM by talldaniel2
May 03, 2012 02:09 PM|LINK
May 09, 2012 08:34 AM|LINK
When you say "ARR server" do you actually mean a control server? Obviously you only need ARR when you want to load balance and I assume you are doing that via the F5's.So a control server with a single primary and a single secondary?
If so, your set up seems fine, the only thing I would say is maybe go for more than one secondary server. Web farms are good but from my experience WFF is certainly not the finished article yet and when they fail they are a PITA to fix and can be out of
contention for days at a time.
At least with another secondary you have some extra resilience.
May 09, 2012 01:02 PM|LINK
May 14, 2012 06:04 PM|LINK
Your secondary servers have to be able to access the web on port 80 else you have to do a work around.
We dont use the load balancer for WFF as the software seems so fragile that we would probably REALLY be pushing our luck. Nor do we currently use it for Platform provisioning, but may in the future.
The warm up feature is not practical, so we dont use that either.
The fail-over is difficult to write as the log file will indicate that sync is shut off when it really isnt.
With all of that said, yes, we have setup our farm in some areas to have the primary for one farm, be the secondary for the second. It appears to work find so far.
The way I think of WFF, which might help you, is that the sync engine itself was apparently written by geniuses of the first degree, however, the wrapper around it was not written by the same folks. (censored who I suspect wrote the wrapper.)