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

Monitoring system components88
WWN card
Use the following steps to check the WWN status.
NOTE: If a Status LED on the WWN bezel flashes, the Power LED on the WWN bezel also flashes,
for increased visibility.
To determine the status of the WWN card:
1. Check the LED indicators on the WWN bezel (see Figure 23 on page 90) 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. The LED patterns may temporarily change during POST and other diagnostic tests;
for information about how to interpret the LED patterns, refer to Table 25 on page 91.
2. Check the WWN card status using the commands listed in Table 22 if you have problems
viewing or modifying the data stored on the WWN card. Difficulty retrieving or modifying this
data could indicate a WWN card failure.
3. If the error log or serial console display error messages that indicate problems with WWN units
(see Table 23), the WWN card might have failed.
Table 22 Data stored on the WWN card
Data Related commands
WWN values wwn, chassisShow
Data about the chassis and WWN card chassisShow
Ethernet and fibre channel IP address
information for the CP ports
ipAddrShow, ipAddrSet
History log information historyShow, historyLastShow
Names of switch switchName