2. Type psShow to check power supply status.
The power supply status displays OK, Absent, or Faulty. If a power supply is absent or faulty,
contact HP to order replacement power supply.
Figure 60 Power supply
1. Power LED
Table 33 describes the power supply LED patterns and the recommended actions for those
patterns.
Table 33 Power supply LED descriptions
Recommended actionStatusColorLED pur-
pose
Ensure power supply is firmly
seated, DC04 SAN Director has
incoming power, both power
cables are connected, and AC
power switches are on.
Power supply does not have incom-
ing power and is not providing
power to the DC04 SAN Director.
No light (LED is
off)
Power
No action requiredPower supply has incoming power
and is providing power to the DC04
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. Check the LED indicators on the blower assembly (see Figure 61). The LED patterns may temporarily
change during POST and other diagnostic tests; for information about how to interpret the LED
patterns, see Table 34.
HP StorageWorks DC and DC04 SAN Backbone Director Switches 165
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