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Maintaining Units > Background Tasks > Background Task Prioritization
Background Task Prioritization
Although migration tasks follow the same schedule as rebuild and initialization tasks, they are always given the highest priority because of the controller and disk resources required during migration.
Once a unit is put into the migration state, it must be allowed to complete the process. While migrating, rebuilds or verifies to the unit are not permitted.
Rebuilding preempts verify operations. If a unit requires rebuilding, that process will take place before the unit is verified.
Controllers can work on multiple units at the same time. This means that if you have both a redundant unit and a non-redundant unit, the verification of the redundant unit and the media scan of the non-redundant unit will occur at the same time.
Related Topics
Background Tasks
Scheduling Background Tasks
Setting Background Task Rate
Viewing Current Task Schedules
Turning On or Off Use of a Rebuild/Migrate Task Schedule
Removing a Task Slot from a Schedule
Adding a New Task Schedule Slot
Rebuilding Units
Starting a Verify Manually
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