server harware

I hate to say it, but no. It’s impossible to give good recommendations based on what you’ve said now.

As an example, are you running 300 low-traffic sites that will get one or two visitors a day, or are you running 300 sites that are 10,000,000 views an hour sites? Each situation is the same number of sites, but there’s vastly differing hardware requirements.

The only recommendation that I’d give is get a server set up that your budget can afford and load it upgradually to see how it responds. You’ll soon see if there’s a site or site that’s using more resourses then the others, and you’ll find out for real if you do or do not need to upgrade anything.

Ok, and expect to have this thread shut down pretty soon if the wrong questions are asked or the wrong people respond. Hosting questions tend to attact the highest amount of SPAM posts around here, so they are watched very closely. ??

Thanks a lot catacaustic for your prompt answer,
so before this thread is shut down, maybe I can post some more info:
We do not expect more visits than 1000-2000 per day per site.
The sites are not all going alive at the same time, so it might take an year to reach the number of 300 sites.
The sites are going to be mostly for local audience all over the world so that means that the peek visits on each site will be different.
So any recommendation in terms of capacity, memory, processor power is welcomed ??

No idea, and most people won’t either. As I said before, get what your budget allows and see how it goes as you move ahead with it all. The only recommendation that I’d give is to get a VPS and not a dedicated server. The only reason behind that is that you can easily upgrade a VPS to add more resources as they are needed, but it’s harder and more expensive ot upgrade a physical server.