HP DC SAN Backbone Director Switch Hardware Reference Guide (5697-2158, August 2012)

Table 11 Power supply LED descriptions
Recommended actionStatusColorLED purpose
Ensure power supply is firmly
seated, DC SAN Director has
Power supply does not have
incoming power and is not
No light (LED is off)Power
incoming power, both power
cables are connected, and AC
power switches are on.
providing power to the DC SAN
Director.
No action requiredPower supply has incoming
power and is providing power to
the DC SAN Director.
Steady green
Replace power supply.Power supply is about to fail.Flashing green
Monitoring blower assembly status
To determine the status of a blower assembly:
1. Observe the LED indicators on the blower assembly (see Figure 30 (page 59)). The LED patterns
may temporarily change during POST and other diagnostic tests. For information about how
to interpret the LED patterns, see Table 12 (page 60).
2. Verify the blower assembly status using the fanShow command.
The status for each blower assembly displays OK, Absent, or Faulty. The RPM of each fan in
the assembly is also provided. If a blower assembly is absent or faulty, contact HP.
Figure 30 Blower assembly
1. Power LED
2. Fault LED
Monitoring blower assembly status 59