dynamic storage account reset
I'm a bit miffed. I had many files in my storage account and found that my storage account was reset. All of my files are gone and there is no way to recover them. The point of a storage account is that it is persistent and backed up across regions. There is no way to back it up, take a snapshot or recover files.
edwin young commented
Sorry you've lost data! I'm not sure what happened in this case, but Cloud Shell doesn't delete your storage account, even if you explicitly disconnect it. The file storage may actually still exist in the subscription if it was disconnected from Cloud Shell. Also since the Cloud Shell storage is just Azure file storage, it IS possible to back it up, snapshot it, or mount it as a filesystem, by accessing the underlying file storage through Azure. See https://docs.microsoft.com/en-us/azure/backup/backup-azure-files