&gt;Don’t blow anything into the Cloud that you don’t have a personal copy of.<p>I don&#x27;t understand this logic. Amazon&#x27;s S3 offers service level agreements with failure rates that at one point implied the statistical likelihood of losing an object to be once in &quot;thousands of years&quot;. When dealing with any sort of stable storage this is simply something I cannot offer. I couldn&#x27;t produce a set up locally with the resources I have for making guarantees on the decade level let alone millennia.<p>With that said I keep personal copies, but the authoritative copy is what&#x27;s in the cloud, because its a hell of a lot more stable.<p>TL;DR I hear this argument all the time. The cloud isn&#x27;t perfect but its a hell of a lot closer to anything I could achieve. &quot;not invented here&quot; syndrome won&#x27;t save your data.