With the Network Edition we can supply some load tools under NDA. In general we don't release those. You should be able to support those 1000 users on a dual cpu 2gig RAM machine. In general you want to oversize to handle peaks so it might be a slight overkill but better to be over than under with sizing.
It will also depend on access. IMAP is more chatty than POP for example, and Outlook/Web UI would be less load on the system than say IMAP. Also depends if this is an office type environment where you have say a heavy peak at 9am when everybody gets in and checks their mail from the night before. |