can anyone help me how many users do 1GB of RAM can accommodate? sometimes the vSZ is experiencing "out of service" and the utilization is high. The vSZ is being used in a University most of the users accessing the APs are students.
There are multiple resource levels. I don't think you'll gain much by adding a gig or two except maybe for cache performance. The release notes have the different levels that will get you number of clients, etc but there is nos specific gain from having more ram
Should be using what the release notes show in the required resources tables. If you are still having problems with that level of resources, you could look into a clustered environment. As long as you don't use some features, no additional charge for adding another node (I believe).