Precautions Specific To Wwn Cards; Wwn Card Fault Indicators; Wwn Card Location And Numbering - IBM SAN512B-6 Installation, Service And User Manual

Figure 43. WWN card location and numbering

Precautions specific to WWN cards

Observe the following precautions for these cards:
v Wear an appropriately grounded ESD wrist strap when handling and installing
v The device will operate with one WWN card, but will be in degraded condition.
Note: Do not use steps in the WWN card and WWN card bezel removal
procedures to disable logical switches and power down the device.

WWN card fault indicators

Before replacing a WWN card, verify that the replacement is necessary. Any of the
following events can indicate that cards require replacement:
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SAN512B-6 Installation, Service, and User Guide
1 - WWN card 1
2 - WWN card 2
3 - WWN card bezel
device blades and cards. Follow electrostatic discharge (ESD) precautions. Wear a
wrist grounding strap connected to chassis ground (if the chassis is plugged in)
or a bench ground.
If you have removed a card, be sure to replace as soon as possible.
CAUTION:
For safety reasons, the ESD wrist strap should contain a series 1
megaohm resistor.
CAUTION:
Static electricity can damage the chassis and other electronic devices.
To avoid damage, keep static-sensitive devices in their static-protective
packages until you are ready to install them.