ONTAP Discussions

Data Optimization and FlexGroups - Volume Constituants

JFM
1,767 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
1 ACCEPTED SOLUTION

SpindleNinja
1,754 Views
4 REPLIES 4

SpindleNinja
1,755 Views

It's per aggr. 

JFM
1,746 Views

So, I guess my understanding was right. 

Presales SE at ESI Technologies

parisi
1,665 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
1,531 Views

Technically correct, the best kind of correct. 

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