IBM System Storage DS4000, Hardware Maintenance Manual, Page: 114 / 184

Table 39 describes the power supply indicator light.
Table 39. DS4400 storage server power supply indicator light
Indicator light Color
Normal
operation
Problem
indicator
Possible conditions suggested by the
problem indicator
1
Power supply Green On Off
v
No power to DS4400 storage server
v
No power to storage subsystem
v
Power supply failed or is turned off
v Overtemperature condition
1
Always use the storage management software to identify the failure.
Mini hub indicator lights
There are five host-side mini hub indicator lights and five drive-side mini hub
indicator lights. Figure 61 shows the host-side indicator lights. The drive side
indicator lights are the same; however, the possible conditions suggested by the
problem indicators (described in Table 40 on page 87) might be different.
Table 40 on page 87 describes the indicator light status when there are fibre
channel connections between host-side and drive-side mini hubs.
OUT
IN
!
2 Gb/s
1 Gb/s
OUT
IN
!
2 Gb/s
1 Gb/s
OUT
IN
!
2 Gb/s
1 Gb/s
OUT
IN
!
2 Gb/s
1 Gb/s
OUT
IN
!
2 Gb/s
1 Gb/s
OUT
IN
!
2 Gb/s
1 Gb/s
OUT
IN
!
2 Gb/s
1 Gb/s
OUT
IN
!
2 Gb/s
1 Gb/s
Power supply
Green light indicates
that the power supply
is operating properly.
Normal status: On
Problem status: Off
Power supply
Green light indicates
that the power supply
is operating properly.
Normal status: On
Problem status: Off
Figure 60. DS4400 storage server power supply indicator light
OUT
IN
!
2 Gb/s
1 Gb/s
OUT
IN
!
2 Gb/s
1 Gb/s
OUT
IN
!
2 Gb/s
1 Gb/s
OUT
IN
!
2 Gb/s
1 Gb/s
OUT
IN
!
2 Gb/s
1 Gb/s
OUT
IN
!
2 Gb/s
1 Gb/s
OUT
IN
!
2 Gb/s
1 Gb/s
OUT
IN
!
2 Gb/s
1 Gb/s
OUT
IN
!
2 Gb/s
1 Gb/s
OUT
Speed
Bypass
(upper port)
Bypass
(lower port)
Loop good
Fault
Mini-hub indicator
lights
Link rate
interface switch
Figure 61. DS4400 storage server mini hub indicator lights
86
IBM TotalStorage DS4000: Hardware Maintenance Manual