HP StorageWorks SAN Director Installation Guide (A7393-90009, May 2007)

Installing FRUs102
How to determine whether or not to replace the WWN card
Before replacing the WWN card, verify that the replacement is necessary. Any of the following
events indicate that the card requires replacement:
• Status LEDs on the WWN bezel (see Figure 29 on page 101) do not reflect the actual status of
the components.
• Problems viewing or modifying the data stored on the WWN card (see Table 31 on page 103).
• Error messages regarding WWN units #1 or #2 (see Table 32 on page 104)
1. To determine the status of the WWN card:
LED indicators on the WWN bezel (see Figure 29 on page 101) and verify that they reflect the
actual status of the components. The WWN bezel covers the WWN card and allows its LEDs to
shine through. The LEDs on the WWN bezel provide a consolidated view of the port blade
status, CP card status, and power supply status. Table 30 provides information about interpreting
the LED patterns.
Table 30 WWN LED patterns
LED location/purpose Color Status Recommended action
Port blade/CP card
power
Steady green Power is okay. No action required.
Port blade/CP card
status
Steady amber Card is faulty. Check card.
No light (LED is off) Card is okay. No action required.
NOTE: If a card slot or power supply bay has a filler panel installed, the corresponding LEDs on the
WWN card do not light up.
Power supply
power/status
Steady green Power is okay. No action required.
Steady amber Power supply is faulty. Check power supply.
NOTE: If a status LED on the WWN bezel flashes, the power LED on the WWN bezel also flashes, for
increased visibility.