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Table 6. Storage server indicator lights
Indicator light
Color
Power
Green
Power supply
Amber
fault
Storage server
Amber
fan fault
Controller fault
Amber
Fast write
Green
cache
1
Always use the storage-management software to identify the failure.
there is data in the cache and blinks during a fast write operation.
RAID controller indicator lights
Each RAID controller has ten indicator lights: one power, one fault, and eight status
lights, as shown in Figure 25 on page 23.
22
IBM TotalStorageFAStT900 Fibre Channel Storage Server: User's Guide
Normal
Problem
operation
indicator
On
Off
Off
On
Off
On
Off
On
Steady or
Software
2
blinking
dependent
Possible conditions indicated by the
problem indicator
v The FAStT900 Storage Server has no
power.
v The power supply cables are loose or the
switches are off.
v Both power supplies have failed, are
missing, or are not fully seated in FAStT900
Storage Server.
v The temperature of the FAStT900 Storage
Server is too high.
v One of the redundant power supplies has
failed or the power supply is turned off,
disconnected, or is not fully seated in the
FAStT900 Storage Server.
v The temperature of the FAStT900 Storage
Server is too high.
v If both power supplies have failed, are
turned off, or are disconnected, all of the
indicator lights will not be off.
v
v The storage server fan has failed.
v The fan and communications module is
missing, unplugged, or has failed.
v The storage server fan circuitry has failed.
v The temperature of the FAStT900 Storage
Server is too high.
v The RAID controller is restarting.
v The RAID controller has failed.
v One or more controller memory modules
have failed.
During normal operation, the indicator light is
1
not lit in the following conditions:
v The RAID controller cache is not enabled.
v The battery is not ready.
2
The fast write cache indicator light is on when
1
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