[atYevP]

We're definitely looking at options like this, but the engineering work that it would take to implement solutions like that are not insignificant, and a lot of our engineering muscle has been working to roll out the Vaults over the past year and change! It could certainly be another revenue stream for us, but building out a new datacenter is expensive, especially if you don't buy/guarantee build-out ahead of time, so we'd have to forecast how many people would want that service to prepare accordingly, again not insignificant stuff, but is definitely possible in the future!

[kbenson]

The nice thing about using separate clusters is that you can build them out in chunks. Build X new capacity in your main datacenter as a new cluster, and X new capacity in a different datacenter, and replicate. Need more redundant capacity? Build Y new capacity in your main datacenter, and Y new capacity in a different datacenter, not even necessarily the same backup datacenter as before. You end up with one main non-redundant cluster, and a bunch of smaller redundant clusters spread over one or more additional datacenters.

If you're really lucky, you siphon off customers from the non-redundant service for this at the same or faster rate as they are signing up for the non-redundant service, allowing you to not have to build that out much for a short while.