The Control buttons located at the bottom of the display allow you to toggle between enabling and disabling disk functions:
Power Up
Sets the drive to its normal start-up state.
Power Down
Sets the disk to the drive off/unmated state. In this state, the disk
is stopped and in bypass (power-save) mode.
Power down a disk only when performing diagnostics or when you need to actually replace the disk.
Blink LED
Requests the drive to begin blinking the LED associated with the disk.
Stop Blink LED
Requests the drive to disable (turn off) the LED associated with the disk.
Bypass Port A
Bypass port A of the disk.
Bypass Port B
Bypass port B of the disk.
Enable Port A
Enable port A of the disk.
Enable Port B
Enable port B of the disk.
SEE ALSO:
Control Disk Status