Question with Regard to Operations Manager reporting that an Aggregate is over de-duplicated

[pmonte]

I have a customer receiving the following message from Operations Manager:

Deduplication : Aggregate is nearly over deduplicated
Source		javascript:filer_view_open_win('https://kstlneapp02.corp.chartercom.com:443/api?api=/util/true&onsuccess=fv&jumpTo=netapp.fv.volumes.manage.Aggr... kstlneapp02:aggr1_FC
Severity		Warning
About		Overdeduplication level of the aggregate
Condition		Over deduplication percentage ( 140.03% ) of the aggregate exceeds the nearly over deduplicated threshold ( 140.00% ). Increase the threshold or add disks to the aggregate.
Triggered		05 Oct 03:41
Notified
Acknowledged		No
Deleted		No

Can anyone tell me what this means and what action is supposed to be taken?

Thanks,

Phil Monte

[karl_pottie]

As far as I understand it, this is a harmless warning and it means that should you ever decide to un-deduplicate all data, there will not be enough storage to do that.

Don't know why anybody would ever consider to un-deduplicate their data, so simply ignore the message or reconfigure dfm to set this threshold to 200% or higher.

[adaikkap]

Or use the dfm eventtype modify to modify the severity of the event.

Regards

adai

[rshiva]

Hi,

The main reason why we have to keep tab over deduplication rate (deduplication threshold) is when you undedupe a volume, we need to ensure that the volume doesn't runout of capacity.

Thanks and regards

Shiva Raja

[amiller_1]

I usually joke about this with customers....basically just means that "dedup is working really well".