Ask YC: What is your company's datacenter footprint?

I admit to being very curious about how much datacenter space startups and others are using (either renting of individual machines or of racks).

Right now all of my space comes to about 2 racks' worth, including stuff I run on behalf of my customers.

We all know about e.g. Second Life and their 2000 (equivalent to about 50 racks or more, depending on density and how much other stuff is in the rack) servers.

Are you running on one or two servers to start?

Or are you using 5 racks each in 2 different DCs to be redundant and ready for insane levels of traffic?

Do you have a growth strategy, or are Amazon's services what you intend to use when you get bigger?