How many ressources openfire use ?

Hello,

I'm Kenny and I'm an IT Technician for a commercial website. We are about a thousand employees.

After many tests, I'd like to install openfire for all the employees on a Linux server. Yesterday, I searched on the forum\website some many informations but I didn't find what I wanted.

For a year and for a thousand employees, I would like to know how many space disk I need approximately.

Have you some stats on the network ressources ? on the CPU usage ? Memory used ?

Thanks in advance for your help.

Have a nice day.