General Sizing
Microsoft provides some general sizing guidelines, which are summarized in Table 30.1.
Table 30.1. General Sizing of Servers
A dual 2.0GHz, 16GB supports 10,000 users as a Front End Server, whereas a dual 2.0GHz, 32GB supports up to 80,000 users as a Back End Server. That said, it is generally a good idea to account for an n+1 design when populating Front End Servers. If you were to plan for 30,000 users, take that number and divide it by the 10,000 users per Front End Server and add 1 for a total of four Front End Servers. This places a normal load of 7,500 users per server with the capability to redistribute to 10,000 users ...
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