Great summary of your architecture. Thanks for sharing! A few questions: - Is everything in the same datacenter or in different datacenters? What happens if t

Great summary of your architecture. Thanks for sharing! A few questions: - Is everything in the same datacenter or in different datacenters? What happens if the datacenter is unavailable for some reason? Are data replicated somewhere? - You moved from 2 machines to at least 10 (at least 2 load balancers, 2 front ends, 1 MySQL master, 1 MySQL slave and 2 pairs of fileservers). That's a lot more. Do you need more machines because you need more capacity (to serve the growing traffic) or just because the new architecture is more distributed and requires more machines by "definition"? - I understand the standby fileservers are idle most of the time: reads go the active fileserver, only writes are replicated to the standby. Am I understanding correctly? If yes, it looks like a "wasted" capacity?