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[Server 22538] Deduplication gets stuck, refuses to cancel, while fsdmhost.exe spins indefinitely
Feedback Hub link On a brand-new disk (WDC WD60EFZX), after creating a storage space, ReFS, bitlocker, copying 3TB of data, and enabling deduplication, the deduplication process begins and starts...
Having same issue with a Raid of 120TB, it just like how you described.
Thanks Thomas, I'm glad I'm not alone on this one. As a small addition to what I wrote above, over this past weekend, I started all over, copied the same data, all the same settings, but used NTFS instead. That seemed to solve the issue, dedup now had no problem, and is working normally.