Azure SQL Backups - Are FULL, Differential and Transaction Log Using DPM Behind the Scenes?

  • We are being told that Azure SQL Backups, even though documentations indicates FULL, Differential and Transaction Log, are really leveraging DPM behind the scenes.  Is this true?  We can find no documentation supporting this statement.
    Thanks

  • I don't know but the question is does it matter? There is no MSDB database to query the backup information from, you can't change the recovery model etc. There is no SQL Agent.
    You have the ability to restore to a point in time and to me this is what matters.
    They are undoubtedly using some sort of tool to handle the backing up but as to what that tool is I doubt they would tell.

  • In the end it doesn't matter, as long as we can perform point-in-time restores and as long as the IO isn't paused during a backup, which happens with DPM when it backs-up files unrelated to SQL Server.  It's more of a curiosity to better understand what is being used by Microsoft.  If Microsoft is using DPM in Azure PAAS, then perhaps that is something we should also consider for IAAS.  It was a question I wish I asked at Ignite.  Adding to the curiosity is the introduction of another form of PAAS, Managed Instance, which re-introduces the SQL Agent.

    Thanks,  Dave

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