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Procedure
1. Stop all I/O to the system from hosts that access the expansion enclosure.
2. Unmount any associated file systems.
3. Wait 5 minutes for all write data to be flushed to the drives.
4. Unplug both of the power cords from the rear of the expansion enclosure to remove all power from the
enclosure.
5U expansion enclosure LEDs and indicators
The 5U expansion enclosure has several sets of LEDs that provide information about the overall status of
the enclosure, power, drives, fans, canisters, and SAS connections.
A 5U expansion enclosure has sets of LEDs on the front and rear of the enclosure. Inside of the expansion
enclosure, LEDs also indicate the status of the drives and each secondary expander module.
LEDs on the front of the expansion enclosure
As Figure 60 on page 49 shows, the front of the 5U expansion enclosure contains LEDs for the display
panel (
1
) and for each of the power supply units (
Figure 60. LEDs on the front of the expansion enclosure
1
Display panel LEDs
2
Rack retention thumb screws
3
Power supply unit LEDs
4
Power supply units (PSUs)
5
PSU fascia (1U)
6
Front fascia (4U)
The display panel (
enclosure. Table 12 on page 49 describes the function and meaning of the LEDs on the front display
panel.
Table 12. Display panel LEDs
Function
Color
Power
Green
Identify
Blue
1
) contains three LEDs that describe the operational status of the expansion
Status
On
Off
On
Off
3
).
Description
The expansion enclosure power is on; this LED is
controlled by the expansion enclosure.
The expansion enclosure power is off.
Identifies the expansion enclosure; this LED is
controlled by the system. Use the management GUI or
service interface to identify an enclosure.
The expansion enclosure is operating normally.
Chapter 2. Installing the system hardware 49
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