Data Infrastructure Management Software Discussions
I have a customer receiving the following message from Operations Manager:
Deduplication : Aggregate is nearly over deduplicated
Overdeduplication level of the aggregate
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.
05 Oct 03:41
Can anyone tell me what this means and what action is supposed to be taken?
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.
Or use the dfm eventtype modify to modify the severity of the event.
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
I usually joke about this with customers....basically just means that "dedup is working really well".