I am planning:

Core Duo 6600
3GB RAM
500GB (after RAID1, Raw ~1TB)
Bandwith: ~1GB

My clients will mostly host CMSes with 1000-5000 uniqueIPs/day

so how many sites should I allow on one server?

Thank you

1GB of traffic?! surely you must mean 1TB..

Sorry I mean connection... bandwith

hmm hard to say, some people will host heavy-duty websites and others will host websites that don't generate any visits at all. The server sounds alright for atleast 300 websites.

It depends entirely on your business model and plan, it also depends on what you plan to offer and who to. Good luck!

1000-5000 uniques is pretty heavy. depends on many factors as others say however, id say 100-300 sites.

First of all, thnx for replays,

So minimum would be 100 sites, is that right? its all I want to know, its pretty enough for me :)

Remember to think about what resources you're letting clients use though too - such as MySQL databases? Content management systems can sometimes be very resource heavy :p

Remember to think about what resources you're letting clients use though too - such as MySQL databases? Content management systems can sometimes be very resource heavy :p

Exactly. Its not just about Disk Space and Bandwidth. MySQL databases and other resources can slow servers down. I would get a few accounts on to the server and see the average usage of each client. Then base the results off that to decide how many people should be able to fit on that server.