I am designing an ADFS solution for Office 365 where we will have 300-500 users on Office 365 and use Kemp VLM for load balancing ADFS. I am considering having the Kemp VLM proxy connections to 2 internal ADFS 3.0 servers. My question is will the VLM-200 be sufficient for this type of workload (assuming no other NLB workloads) or will I require VLM-2000.
I do not think it will be needed for the higher throughput as it is just authentication claims but I don't know if the session limits for the VLM-200 will be too low and there is a significant cost difference.
Is there any sizing guidance that someone can recommend?