The company I work for is considering centralizing their MS Exchange infrastructure and I was wondering what the miminmum network bandwidth would have to be to support a full Outlook client (say Outlook 2003 with Exchange 2003 backend) remotely.
There are 24,000 users across 70 sites, they send on average 15 emails and receive 30 emails per day. The majority of the emails (30%) are approx between 4kb to 10kb in size but around 3000 messages a day are over to 2mb.
What I need to know is if we were to centralize, how much bandwidth would I require for a small site (1 to 50 users), a medium site (50 to 200 users) and a large site (200+ users) as a minimum?
The client would be the full version and not OWA and the servers would be based in data centre.
Thanks a lot in advance, I appreciate any help or advice you can give.