We are planning to upgrade exchange 2013 and expand our exchange Organization. We have 10 AD sites with below details.
HQ Site 5000 Mailboxes
Site1 6000 Mailboxes
Site2 4000 Mailboxes
Site3 800 Mailboxes
Site4 500 Mailboxes
Site5-10 100-400 Mailboxes.
Below are our related concerns:
1.Do we need to place exchange servers in sites? if yes, what are the requirements and criteria to place exchange server on sites.
if not, what are the bandwidth requirement in order to connect to HQ site.