Running Robocopy with Data Depuplication

Question

What are the Robocopy commands that should not be used on a file system with data deduplication enabled? Per the FSx for Windows File Servers user guide:

"Warning
It is not recommended to run certain Robocopy commands with data deduplication because these commands can impact the data integrity of the Chunk Store. For more information, see the Microsoft Data Deduplication interoperability documentation."

Thanks!

Answer

Hello,
Per linked article
https://learn.microsoft.com/en-us/windows-server/storage/data-deduplication/interop
Robocopy

Running Robocopy with Data Deduplication is not recommended because certain Robocopy commands can corrupt the Chunk Store. The Chunk Store is stored in the System Volume Information folder for a volume. If the folder is deleted, the optimized files (reparse points) that are copied from the source volume become corrupted because the data chunks are not copied to the destination volume.

It seemed that use of  an exclusion filter of `/System Volume Information` or  `/$RECYCLE.BIN|/System Volume Information` would help to avoid robocopy issue.

Running Robocopy with Data Depuplication

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