System component description
VNX5700 Hardware Information Guide 19
Power supply/cooling (fan) module LED
The power supply/cooling (fan) modules have status LED on the front. Figure 8 shows the 
LEDs for the power supply/cooling (fan) modules and Table 5 describes them.
Figure 8  Power supply/cooling (fan) module LED
Fault Amber On Storage processor has faulted.
Blinking Storage processor goes through six stages of power up:
1. Executes a BIOS check, blinking once every 4 seconds
2. Executes a POST check, blinking once every second
3. Loads the operating system, blinking four times a second
Blue 
(see 
Note)
4. Operating system loaded, blinking once every 4 seconds
5. Operating system starting operating system drivers, 
blinking once every second
6. Operating system drivers operating, blinking four times a 
second
— Off Storage processor operating normally.
Unsafe-to-
remove
White On Storage processor is unsafe to remove.
— Off Storage processor is safe to remove.
Note: The fault LED changes color from amber to blue when the operating system is loading, see 
step 4 in the description.
Table 4 CPU LEDs (continued)
LED Color State Description
AC
AC
AC
AC
Power supply/
cooling (fan) power/fault LED
CNS-001673
Table 5 Power supply/cooling (fan) module LED
LED Color State Description
Power/Fault Green On Normal (no faults detected)
Amber Blinking Power supplied but external fault detected
Amber On No power