[security] multiple domains on a network - better..... ?

[Mr.Guvernment 0]

hey all,

 

Okay - the boss mentioned to me something about dividing up our network, i assume this would be done with multiple domains and he says that if we do this it will help releive load on our network some how....

 

 

the idea is to have;

 

 

domain 1 - domain 2 - domain 3

 

 

 

and in each doamin resides certain computers - say

 

 

Domain 1 - web server / mail server

Domain 2 - support computers

Domain 3 - personal computers

 

 

and then what we want to do is only allow certain people certain access to Domain X.

 

 

Do i need a Domain Controller for this and Active directory? or is there another way to do this?

 

Will making seprate "domains" improve network peformance at all?