When you use Azure Backup to back up your data, the backup fails if the data source is larger than 850 gigabytes (GB). A typical data source in such a case is a volume, a Hyper-V virtual machine or a Microsoft SQL Server database.
For additional details and a link to a downloadable hotfix that resolves this issue, please see the following:
KB2989574 - A backup to Azure Backup fails if the data source is larger than 850 GB (http://support.microsoft.com/kb/2989574)
J.C. Hornbeck| Solution Asset PM | Microsoft GBS Management and Security Division
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