Currently I have a web app running where I have 9 VPS servers connected to a Load Balancer. As my web app has been getting traffic, I've been purchasing new VPSs to handle the load. Managing so many of them is pretty annoying and I don't really have time to learn Puppet/Chef.
I am wondering, would I get more output if I purchase say 2 high end dedicated servers assuming that my Ubuntu/Apache config would be cloned over to them? Is there any way to estimate the gains/loses in hit/sec that I would get? Right now most of my VPSs are 8GB ram with low CPU priority.
This is my level of volume right now: http://cl.ly/image/47361d15472p
Often times I have spikes of up to 2k/sec. My VPS system seems to cap at around ~850/sec.
Would going dedicated by the next logical step?