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After a drive group is removed from a Storage Domain, the drive group is displayed as unassigned. If you want to move a drive group from one Storage Domain to another, remove the drive group from the Storage Domain and then add the drive group to a different Storage Domain.
(Default) Specifies that the system balances the resources that are needed for background data movement with the resources that are needed to service the incoming client I/O.
Specifies that the system restricts the amount of system resources that are given to the background data movement operation. This option minimizes the impact on client I/O. Recommended for highly‑loaded Storage Domains.
Specifies that the system grants resource priority to the background data movement operation. This option reduces the amount of system resources that are available for client I/O. Recommended for lightly‑loaded Storage Domains.