Setting up two websites on one root server.

Cost $1 more, do I have something wrong.

[lgn1]

Im moving to a hosting company that allows multiple IP
addresses per root server.

The cost of IP address is $1 a month.

Since I control the root server, I could set up multiple websites, and excluding excess bandwidth, and storage, SSL certificate and Domain name registration, does that mean that the hosting cost of the second website is only $1 more a month.

I have never done muliple hosts from one root server before, and the cost increase appear unrealistic.

I must have miss something.

[FalseDawn]

"does that mean that the hosting cost of the second website is only $1 more a month"

Yes, but be careful about overloading the server, especially if its overloaded with accounts to start with.

[lgn1]

The server is dedicated to us, and we get a 1 TB of bandwidth a month included with that.

It's a Celeron 2.0 Ghz with 512MB of memory.

I don't have any experinces with sizing webservers.

Is their a general rule, like you should only get X amount bandwithh for Y processor speed?

[FalseDawn]

There's just too many variables to accurately estimate how many sites you can host on a box.
eg are the sites dynamic (php, asp etc) or mainly HTML - database usage (number of and type), number of visitors and how many concurrent requests there are, are scipts and databases properly optimized? Are you using caching? etc etc
Bandwidth and procesing power are not actually related - you can push a load of bandwidth for very little cpu usage, and conversely, a site with heavy database usage and complex dynamic scripts can use a load of cpu power but little bandwidth.
512kb of memory will likely be your limiting factor if you have a lot of dynamic sites and/or lots of users online simultaneously.

[Raymond]

If you can use up close to 1TB a month, you will need better spec than celeron 2.0 512M.

[vincevincevince]

You don't even need one IP per website - you are quite able to run hundreds of websites all from one IP on one server (virtual hosting - also the recommended use for sadly limited IP addresses).

It all comes down to the size of the sites. If you only get 10 visits a day per site, you could fit 100 sites on your server on one IP address and run fine.

If you've not done this before, try adding more sites until you see a speed / responsiveness reduction. Then take some off (for when your first sites grow!) and put them on a new server.