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What is an orphaned disk?

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Category:
disk-drives
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HW
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Applies to

ONTAP 9

Answer

A disk becomes orphaned when it used to belong to a RAID group, but the on-disk metadata is out-of-date compared to other disks from the same RAID group.
 
For example:
When multiple disks fail one after each other, causing the RAID group to go offline, and if the first failed disk is unfailed manually, it will become an orphaned disk.

Additional Information

An orphaned disk still contains data and if the RAID group had a multiple drive failure, the orphaned disk may help to recover the failed RAID group.
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