This command sets the queue policy of the firmware. If the queue policy is on, the firmware utilizes the drive’s queueing policy. If any drives do not support a queueing policy, this policy will have no effect on those drives.
For a spare unit, drive queuing is not meaningful or applicable. When a spare becomes part of a true unit during a rebuild, it adopts the queue policy of the ''new'' parent unit. Thus, this command does not set the queue policy for the spare unit type.
Note: Queing is only applicable for SATA drives.