we plan to launch a big internet project (worldwide learning portal) and we are not sure abou hardware which is usually needed to support such a portal.

At the moment - we need really rough figures to be able to predict our costs per user / ROI etc. We know that reality can be different and this can never be predicted precisely.

Here is some information for you to be able to give us advices:

1) Our server will be visited 24/7 evenly with more/less no peaks.

2) Generally users will be browsing static pages and we count that 1 user will make traffic only about 2MB per hour.

3) Each server will have 100Mbps connectivity to internet.

4) Our (optimistic :) prediction is that there will be about 20 000 concurrent users browsing at one moment.

Is there any configuration of one server that can manage such a number of concurrent users? Or we need more servers?

Could you tell us approximate hardware specification we need for this project?

Thanks a lot in advance,

Tomas