APC 15000 RAID User Manual

Page of 152
Introduction
007-5510-002
  7
There are two 
AC Fail
 LEDs.  Each LED is connected to its power supply independent of the other  
supply. The LEDs are green to indicate that the AC input to the supply is present.  The LEDs turn red 
if the AC input to the supply is not present.  If this occurs, check the LEDs on the front side of the unit. 
If you lose AC power from one supply cord, the LED for that supply outlet will turn red.
Figure 1–5 shows the following status LEDs: System, Controller, Disk, Temperature, DC, and Fan. 
Figure 1–5
LED Status Indicators - Rear Panel of the Controller
The 
SYSTEM STATUS
 LED is  solid green when the entire storage system is operating normally. 
The 
CTRL (CONTROLLER) STATUS
 LED is green when the controller is operating normally 
and turns red when the controller unit is failed.
The 
DISK STATUS
 LED is green when a disk enclosure is operating normally and turns amber when 
there is a problem.
The 
TEMP STATUS
 LED is green when the temperature sensors (6 total) indicate that the system is 
operating normally, amber when one (1) temp sensor indicates an over-temperature condition, and red 
when two (2) or more sensors indicate an over-temperature condition.
The 
DC STATUS
 LED is green when indicating normal operating status. It turns amber if there is a 
non-critical power Supply DC fault (that is, a power supply is not installed or is not indicating “Power 
Good”
). It turns red if an on-board supply fails or if there is a critical supply fault. If this occurs, check 
the LEDs on the front side of the unit.
The 
FAN STATUS
 LED is solid green when fans are operating normally. A flashing green LED 
indicates system monitoring activity such that the monitoring is being updated. The LED flashes amber 
if one of the fans in the module fails. If 2 or more fans fail, the LED flashes a solid red and the system 
will begin the shut down process at 5 seconds, for a total of 30 seconds to complete shutdown.
CTRL
FAN
SYSTEM
  
DC
TEMP
STATUS
STATUS
STATUS
STATUS
STATUS
STATUS
DISK