The other day, the file server started showing up by not serving any shares. Initially it happened once in a week which was solved by a reboot and then it started started to occur almost every hour.
The DFS replication service was showing 99% CPU usage during all of this.
The DFS replication service was showing 99% CPU usage during all of this.
After a bit of research, a hotfix for DFS (KB 3172614) released July 2016 was available.
After the installation of hotfix, the DFS replication service CPU usage came down to tolerable levels.
Powering The Shell 
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