Raid Controller Indicator Lights; Storage Server Indicator Lights - IBM TotalStorage DS4400 User Manual

Table 10. 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 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 30.
Note: To view the RAID controller indicator lights, remove the DS4400 Storage
Normal Problem
operation indicator
On Off
Off On
Off On
Off On
Steady or Software
2
blinking dependent
Server bezel, as shown in Figure 21 on page 23.
Possible conditions indicated by the
problem indicator
v No power to DS4400 Storage Server
v Power supply cables are loose or the
switches are off
v Both power supplies have failed, are
missing, or are not fully seated in DS4400
Storage Server
v Overtemperature condition
v One of the redundant power supplies has
failed or the power supply is turned off,
disconnected, or is not fully seated in the
DS4400 Storage Server
v Overtemperature condition
v If both power supplies have failed, are
turned off, or disconnected (all of the
indicator lights will not be lit)
v Storage server fan has failed
v Fan and communications module is missing,
unplugged, or has failed
v Storage server fan circuitry failure
v Overtemperature condition
v RAID controller is restarting
v 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 RAID controller cache is not enabled
v Battery is not ready
2
The fast write cache indicator light is on when
Chapter 2. Operating the DS4400 Storage Server
1
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