In addition to the functions described in Object deletions, the garbage collection service:
•Deletes data and metadata left in the repository by unsuccessful or interrupted write operations.
•Deletes extra copies of objects that are marked for deletion. For example, the following series of events could occur:
1.A logical volume fails on primary running storage.
2.The protection service detects the failed volume and creates a new copy of each object stored on that volume.
3.The volume comes back online, so the extra object copies that the protection service created are no longer needed.
4.The protection service finds the extra copies that it created and marks them for deletion.
5.The garbage collection service detects the object copies marked for deletion, verifies that they are extra copies, and deletes them.
In all cases, when applicable, the deletion of an object triggers the shredding service. For information on the shredding service, see Shredding service.
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