I don't know whether should I ask it here, but I got nowhere else to ask for it.

It is about the Benchmark of Zimbra, I just wonder how much memory will Zimbra cost during daily use with about 100 users. And average CPU/HD, etc. I read the benchmark on the website, however it is only a test and I do not have that much users.

I just want to find some other's experience on managing Zimbra for I do not have another server to benchmark.