Skip to main content

NetApp_Insight_2020.png 

NetApp Knowledgebase

How to remove a foreign aggregate (made out of orphaned disks) in Clustered Data ONTAP and ONTAP 9

Views:
2,654
Visibility:
Public
Votes:
0
Category:
ontap-9
Specialty:
core
Last Updated:

Applies to

  • ONTAP 9
  • Clustered Data ONTAP 8.3
  • Clustered Data ONTAP 8.2
  • Clustered Data ONTAP 8

Description

Check Active IQ if this impacts your systems

  • In clustered Data ONTAP, while adding a shelf from a different cluster (or a 7-Mode system) to a node, aggregates on that shelf may  be flagged as foreign and the drives belonging to that aggregate as orphan disks.
  • This issue can also be encountered after replacing a failed disk which was never Zeroed

For example, an aggregate can show up as follows under the aggr status command:
aggr0(1) failed

  • This is caused due to the disks not being zeroed (and containing the label) and therefore retaining the aggregate information from the earlier system.
  • These 'foreign' aggregates are visible only when using the node shell.
  • Accessing the foreign volumes inside these aggregates on the clustered Data ONTAP system to which the shelves have been migrated is not supported.
  • However, it *is* supported to remove the foreign aggregates, turning the relevant drives into unZeroed spares.
CUSTOMER EXCLUSIVE CONTENT

Registered NetApp customers get unlimited access to our dynamic Knowledge Base.

New authoritative content is published and updated each day by our team of experts.

Current Customer or Partner?

Sign In for unlimited access

New to NetApp?

Learn more about our award-winning Support