Sun Microsystems Sun StorEdge T3, Installation, Operation And Service Manual

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2-24 Sun StorEdge T3 Disk Tray Installation, Operation, and Service Manual • July 2000
2.6 Powering On and Verifying the
Hardware Configuration
To power on and verify the hardware configuration:
1. Plug the other end of the power cords from the disk tray(s) into AC outlets.
Use alternate power sources to make sure that power and cooling unit features are
redundant.
2. Verify that AC power is present on each power and cooling unit.
The AC LED on each power and cooling unit will be solid amber and the fans will
turn at low speed.
3. Press the power button on each power and cooling unit on all disk trays to power
on the units.
FIGURE 2-13
on page 2-21 shows the power button location. The AC and power
supply (PS) LEDs on the power and cooling units will be green.
4. Check the LEDs at the front and back of the unit to ensure that all components are
receiving power and are functional.
While the drives are spinning up, the LEDs will blink. The disk tray boot time will
take up to several minutes, after which all LEDs should be solid green, indicating
that the unit is receiving power and that there is no drive activity.
For more information on the LEDs and how to interpret them, see Section 4.1.4 “Disk
Tray LEDs” on page 4-3.
Note –
The batteries in the power and cooling units recharge after you power on the
unit. While the batteries are recharging, write-behind cache is disabled.