Ds4400 Storage Server Indicator Lights - IBM TotalStorage DS4000 Hardware Maintenance Manual

completes its power up before you check for faults. It can take up to 15 minutes
for the battery to complete its self-test and up to 24 hours to fully charge,
particularly after an unexpected power loss of more than a few minutes.
The indicator lights for the components of the DS4400 storage server are described
in the following sections.
Storage server indicator lights
The storage server has five indicator lights, as shown in Figure 56. To view the
storage server indicator lights, you do not have to remove the DS4400 storage
server bezel.
Power
Green light indicates power is on.
Normal status: On
Problem status: Off
Power suppl y
Amber light indicates a power supply fault.
Normal status: Off
Problem status: On
Fan
Amber light indicates a fan fault.
Normal status: Off
Problem status: On
Contr oller
Amber light indicates a controller fault.
Normal status: Off
Problem status: On
Fast Write Cac he
Green light indicates data in cache.
Figure 56. DS4400 storage server indicator lights
Table 35 describes the storage server indicator lights.
Table 35. DS4400 storage server indicator lights
Indicator light Color
Power Green
Power supply Amber
fault
82
IBM TotalStorage DS4000: Hardware Maintenance Manual
Normal Problem
operation indicator
On Off
Off On
FAStT700
Possible conditions suggested by the
1
problem indicator
v No power to DS4400 storage server
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 DS4400 storage server
v Overtemperature condition
v Power supply failed or if the Power supply
is turned off, disconnected, or not fully
seated in DS4400 storage server
v Overtemperature
v No power to DS4400 storage server or
storage subsystem (all indicator lights are
off)