run httpd and postgresql on different machines ?

Hi, all,

I want to set up a web site using apache httpd, php and postgresql. From
the performance point of view, which  architecture is better? 1)  Run
httpd and postgresql on the same machine; 2) Run postgresql on seperate
machine. My concern is that the machine I am going to run httpd has
limitted storage. I am expecting the increasing of postgresql database
once I set it ip.

Any suggestions and comments will be highly appreciated.

--
Chuming Chen
System Administrator
NHLBI Proteomics Center
Medical University of South Carolina
135 Cannon Street, Suite 303
Charleston SC 29425
Tel: 843-792-1555 (O)
Fax: 843-876-1126