In order to achieve best performance, Safewhere*Identify recommendation for session state mode is as follow:

1. Single server setup
   Since this type of setup uses only one web server to host Identify tenants, InProc session state mode is the best choice.
2. Redundant setup
   A redundant setup has more than one web servers to host Identify tenants. We recommend the following two solutions for session state:
   • Use InProc session state mode with a load balancer that supports sticky session based on client IPs to ensure that a client is always routed to the same host within a session.
   • If such a load balancer is unavailable, you can opt to use State Server mode. You can learn more about it: https://msdn.microsoft.com/en-us/library/ms178586.aspx

   
   
   You can also find System requirements for Safewhere*Identify by clicking the following link.