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

Installing FRUs100
CAUTION: Do not not route cables in front of the air exhaust vent (located at the top front of the
chassis). Do not use tie wraps for optical cables; they are easily overtightened.
WWN card and bezel summary
The 4/256 SAN Director World Wide Name (WWN) card is highly reliable, containing fully
redundant circuits; it does not usually require replacement under normal operating conditions.
Before replacing the WWN card, make sure you really need to replace it by referring to the
information provided in ”How to determine whether or not to replace the WWN card” on
page 102. Contact HP if you have any questions about whether the WWN card requires
replacement.
The WWN card in the 4/256 SAN Director stores the following persistent information:
• Chassis serial number
• License ID (used to generate license keys)
• Two IP addresses for the control processor (CP) card slots
• Switch name, IP address, and WWN of the Core Switch or SAN Director logical switches
There are two models of the WWN bezel (see Figure 30). One model has a push card and
handles. The other model attaches to the chassis using attaching screws. This section provides
instructions for replacing both models of the WWN card.
The WWN card is highly reliable. Contact HP if you have any questions about whether the WWN
card requires replacement. If the WWN card does fail, the Director can continue operating until a
new WWN card is installed, as long as the following are true:
• The Director is running Fabric OS 5.0.1 or later.
• The configuration is not modified.
• Hardware components are not replaced.
• The Director is not rebooted.