Sun Microsystems SG-XPCIE20FC-NEM-Z manual ID Chip Feature, 5for button locations

TABLE 1-1NEM Features and Specifications (Continued)

Feature	Description
LED indicators	A blue (Ready to Remove), yellow (Service Action
	Required) and green (Power, Attention, and Connected)
	LED on the front panel.
	Two LEDs per channel (green and yellow) on the front
	panel used to indicate port status.
Buttons	Attention button to support hot-swap functionality.
	Locator button to assist in locating the module. (See
	FIGURE 2-5for button locations.)
Form Factor	PCI Network Express Module

ID Chip Feature

The 20-port NEM has an ID chip on it that contains an Electrically Erasable Read Only Memory (EEPROM). This EEPROM stores the worldwide names (WWNs) for each of the ten HBAs and 20 FC ports on the NEM.

When you replace a failed NEM that is running firmware prior to version 2.72a, each of the ten HBAs and 20 FC ports on the NEM is assigned new port and node WWNs. Thus, you must update SAN components, such as FC switches and storage arrays, with the new WWN values.

However, if the failed NEM is running firmware version 2.72a, at minimum, you can retain the existing HBA and FC port WWNs by removing the ID chip from the failed NEM and installing the chip on the replacement NEM. Thus, you do not have to update any SAN components as part of the NEM replacement. In order for the ID chip feature to work, the replacement NEM must be running firmware version 2.72a, at minimum.

For information about determining and updating the firmware version, see the following Emulex documents:

■Solaris:

http://www.emulex.com/support/solaris/sfs_100/manual.pdf#P4

Note – For the Solaris OS, the 2.72a firmware is embedded in the emlxs driver version 2.21g, at minimum. This driver is part of s10u5 and available as Solaris 10 patch 120223-22 or 120222-22 at:

http://sunsolve.sun.com

■Linux: www-dl.emulex.com/support/linux/81103/pdf/manual.pdf

Chapter 1 Network Express Module Overview 3