What is the stability of Google and what redundancy and disaster recovery do they have?
The application and network architecture run by Google is designed for maximum reliability and uptime. In fact, Google’s SLA guarantees a 99.9% uptime. All Google systems are inherently redundant by design, and each subsystem is not dependent on any particular physical or logical server for ongoing operation. Data is replicated multiple times across Google’s clustered active servers, so, in the case of a machine failure, data will still be accessible through another system.