We are currently running Exchange 2007 SP1 with an A/A/P SCC cluster on Windows 2008
The size of our organisation changes sometimes with new mergers and acquisitions. With Exchange 2003, the general policy was to just add the new users to the 2003 Exchange cluster without much thought regarding effect on the cluster.
I would like to change this attitude now :) Let's say that our cluster has 3000 users on each CMS. The CIO tells us that we've aquired a new company and that there will be 300 new mailboxes moving over. The mailboxes will actually be empty initially since the data will be held on a local PST, but we can expect them to grow to a couple of hundred MB each.
The mailboxes will be distributed equally across all the stores, however I want to know what effect this will have on the CMS's. Does anyone know any tools/calculators I can use to find out? Any other helpful points would be really appreciated.
Thanks in advance.