The single SATA disk will be your bottleneck, followed by system time. I'd reserve the machines with the largest physical cache for php, its where you will see the biggest payoff. IMHO Dave On 27/04/2008, at 5:36 PM, mike wrote: > I plan on growing up to 2 million php requests per day (per machine) > and maybe 5 or 6 million static files (video, image, HTML, etc)