While it is possible to use SQL Azure Data Sync to backup and restore your data it is not recommended. 

SQL Azure Data Sync
  • Does not version synchronizations. Therefore, you cannot backup and restore to a specific point in time. 
  • Does not backup other SQL objects, like stored procedures.
  • Does not "restore" quickly.
We recommend Database Copy for SQL Azure databases (http://msdn.microsoft.com/en-us/library/ff951631.aspx) and well established procedures for SQL Server databases.
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Feedback

This release was provided in order to gather feedback from our customers. Now that you have previewed what the SQL Azure Data Sync team is doing, please let us know what you think of our direction, and tell us about your experiences.
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