Why no company that values their data should ever "Go Google" 
Why don't people make backups anymore? I know that using Google Apps is much easier than running your own stuff in-house. It requires much less time and resources, but at the same time there are still best practices and disaster recovery plans that should <i>always</i> have something about backups in them. And just having them isn't good enough. They also need to be followed.  Having worked at a place without these ( and attempting to get them implemented ) versus where I currently work that has them and follows them, I have to say, there are a lot fewer times where I feel like screaming here. Do it, and stop expecting 100% uptime and availability of all docs/important information from any service, internal or external. Nothing is 100% but there are many ways to make it less stressful.