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How to deduplicate the data that is written before deduplication enabled?

edited Jan 1, 2015 11:43AM in Disk Storage ZFS Storage Appliance (MOSC) 3 commentsAnswered

We have CIFS and NFS shares on ZFS 7420 and 7410 storage.And they are heavily utilized from the capacity perspective. We wanted to enable data deduplication and enabled it 2 weeks ago. After that time we writed neatly 1.8TBs of data (mostly backup data of VMs. But Deduplication ratio still seems 1x. Additionally I have 11.8 TB of data on that shares. If the unit thinks none of these data is deduplicated that means there is something wrong with that deduplication algorithm. But if I have to do something more to manually deduplicate that data (start a job or something)

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