YSB Firmware 10.2 and Above
Yosemite Server Backup does support backing up Windows Deduplicated Volumes on Server 2012.
To ensure you will be able to backup/restore data backed up from a Deduplicated volume you will need to turn off ?Reparse Points?
To turn off Reparse Points:
Go into the Properties of the Backup Job.
Click on Advanced
Click on Options
Uncheck Reparse Points within the Windows Options.
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