Other Garbage Collection service functions

The Garbage Collection service performs the following additional functions.

Deletes data and metadata left in the repository by unsuccessful or interrupted write operations.

Deletes extra copies of objects, parts, and chunks 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, part, and chunk stored on that volume.

3.The volume comes back online, so the extra object, part, and chunk 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, part, and chunk copies marked for deletion, verifies that they are extra copies, and deletes them.

In all cases, when applicable, the deletion of an object, part, or chunk triggers the Shredding service.

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