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Table 30 on page 61 explains the function and status that is indicated by each of the LEDs. The power
cords for each PSU are accessible from the rear of the expansion enclosure (
page 62.
Table 30. Power supply unit LEDs
Function
Color
1
Input power
Green
2
DC power
Green
3
Fault
Amber
LEDs inside of the expansion enclosure
Each of the drives and secondary expansion modules within the 5U expansion enclosure has two LED
indicators. To view the drives and secondary expansion modules, you must remove the cover of the
enclosure, as described in "Removing the top cover" on page 41.
Figure 63 on page 61 shows the components of a drive assembly. Each drive has an online indicator (
and fault indicator (
Figure 63. LEDs on a drive assembly
Table 31 on page 61 describes the meaning of the LEDs on each drive.
Table 31. LED indicators on drives
Function
Color
2
Activity
Green
3
Fault
Amber
Figure 64 on page 62 shows the LEDs on a secondary expansion module.
Status
On
Off
On
Off
On
Off
3
).
Status
On
Flashing
Off
On
Flash
Off
Description
The input voltage is within specification.
No power input detected.
DC power outputs are within specification.
DC power is not available.
A fault is detected in the PSU.
No faults are detected.
Description
The drive is ready to be used.
The drive is operating and I/O is occurring.
The drive is not installed or an installed drive is not
ready to be used.
A fault occurred on the drive. The LED is turned off
when the drive is removed and replaced.
The drive is being identified, a fault might or might not
be detected.
The installed drive is operating normally.
Chapter 4. Installing the system hardware 61
1
), as shown in Figure 65 on
2
)
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