ONTAP Discussions

Data Optimization and FlexGroups - Volume Constituants

JFM
935 Views

Hi,

On an AFF unit, using a flexgroup where constituents are spread across both nodes of the controller, are blocs dedupped across all constituents sitting on the same aggregate only or across all constituents across all aggregate? According to this: https://docs.netapp.com/us-en/ontap/flexgroup/enable-storage-efficiency-task.html I would extrapolate to think that data optimization "domain" is still local aggregates only. Am I correct?

 

In other words, two identical blocs stored in constituents sitting on two different aggregates wouldn't be optimized and stay as is. 

 

Thanks for your input. 

Presales SE at ESI Technologies
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SpindleNinja
922 Views
4 REPLIES 4

SpindleNinja
923 Views

It's per aggr. 

JFM
914 Views

So, I guess my understanding was right. 

Presales SE at ESI Technologies

parisi
833 Views

Eh, it's per aggr for cross-volume dedupe.

 

It's per member/constituent volume for other efficiencies. Check TR-4571 for details.

 

https://www.netapp.com/us/media/tr-4571.pdf - starting on page 71

SpindleNinja
699 Views

Technically correct, the best kind of correct. 

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