IBM N series Hardware Manual page 272

11.BootBIOS displays a menu of bootable devices. The devices are listed in boot order. The
primary boot device is the first device that is listed. If the primary boot device is
unavailable, the host boots from the next available device in the list. In the example that is
shown in Figure 18-18, only one LUN is available because SAN zoning is configured to
one path as described in 18.2.1, "Configuration limits and preferred configurations" on
page 239. Select 01 to select the primary boot entry, and press Enter.
Figure 18-18 Bootable devices menu
12.After the LUN is selected, another menu prompts you to specify how the boot device is
identified. Use the WWPN for all boot-from-SAN configurations. Select item 1 to boot this
device by using the WWPN, as shown in Figure 18-19.
Figure 18-19 Selecting how the boot device is identified
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IBM System Storage N series Hardware Guide