IBM System Storage DS4000, Hardware Maintenance Manual

Page: 76 / 184

Table 24. FAStT500 RAID controller indicator lights (front panel)
Indicator light Color
Normal
Operation
Problem
Indicator
Possible conditions suggested
by the problem indicator (1)
Component: controller CRU
Power Green On Off
v No power to controller unit
v No power to storage subsystem
v Cables are loose or the switches are off
v
Power supply failed, is missing, or is not fully
seated
v Overtemperature condition
Fault Amber Off On Controller failure; controller fault condition
Heartbeat Green Blinking (2) Not blinking (2) No controller activity
Status
(eight lights
including
Heartbeat)
Green Various patterns
depending on
the condition
Various patterns
depending on
the condition
If the second, third, sixth, and seventh lights are on
or if all eight lights are on, there is a memory fault
that indicates that the controller CRU failed.
Component: controller fan
Power Green On Off
v No power to controller unit
v No power to storage subsystem
v
Cables are loose or the switches are off
v
Power supply failed, is missing, or is not fully
seated in controller unit
v Overtemperature condition
Power supply
fault
Amber Off On
v Power supply failed
v Overtemperature
v Power supply is turned off, disconnected, or not
fully seated in controller unit
v
No power to controller unit or storage
subsystem (all indicator lights are off)
Power
Power
Power supply
Fault
Heartbeat
Fast write cache
Controller
Controller
fan
Full Charge-B
Full Charge-A
Fault-B
Fault-A
Figure 31. FAStT500 RAID controller indicator lights (front panel)
48
IBM TotalStorage DS4000: Hardware Maintenance Manual