Our organization is currently using GW IM 2.0.4 within it's IT department but there is interest in opening it up to the rest of the organization (6000 total employees; but no expectation that more than approx. 500 will ever use it with no more than a few hundred concurrently). The current messenger install is on a file/print/GW e-mail server at our corporate headquarters and our LDAP servers are located there as well. Approximately 5800 staff are located at 50 remote locations connected over an MPLS network.

Question: At what point should we consider moving GW IM to a dedicated server so it doesn't impact the other critical services running on it? Are there any performance concerns if we have several hundred IM clients connecting across WAN links?