An Engineers Notebook

How to free up space used by Data De-Duplication in Server 2012

If Data De-Duplication is disabled, the system files will remain and actually occupy a lot of space. Here is how to clear it:

The unoptimise command:

start-dedupjob -Volume <VolumeLetter> -Type Unoptimization


Check the status:



Clean up the Garbage:

start-dedupjob -Volume <VolumeLetter> -Type GarbageCollection

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