Fabric-Based Boot Lun Discovery - Dell Brocade Adapters Installation And Reference Manual

Fabric-based boot LUN discovery

This feature allows the Brocade adapter to automatically discover and boot from LUN information
retrieved from the SAN fabric zone database and therefore not require the typical server boot
interrupt and BIOS setup.
When Brocade's Fabric-based boot LUN discovery is enabled, the host's boot LUN information is
stored in a SAN fabric zone. This zone contains zone members that include the PWWN of the
adapter port and PWWN and LUN WWN of the storage target. The adapter boot code will query the
zone member list for the zone name that matches the adapter PWWN to determine the boot target
and LUN.
NOTE
Fabric Based Boot LUN Discovery (auto discovery from fabric) is only applicable when configured in
legacy BIOS mode for either UEFI-capable or non-UEFI capable system.
Fabric Based Boot LUN Discovery is a unique Brocade adapter feature and is the default setting for
the Brocade BIOS Boot LUN option. The feature does not apply to UEFI, as the UEFI stack
implemented by the server vendor does not support boot LUN discovery from the fabric.
This automated feature requires that the connected SAN fabric switch support the Get Zone
Member List (GZME) command. Fabric-Based Boot LUN Discovery has been tested with Brocade
switches (Fabric OS 6.2 and above) and Cisco SAN switches (SAN-OS 3.2.x and 4.1.x).
Example configuration procedures are provided for Brocade fabrics following and Cisco fabrics on
page
Brocade Adapters Installation and Reference Manual
53-1002144-01
Linux
Driver unloading will fail when the new driver package installs, To make the new driver become
effective, perform the following steps.
a. Change to the boot directory.
All platforms - cd /boot
b. Make a backup of the current RAMDISK image.
#cp initrd-[kernel_version].img initrd-[kernel_version].img.bk
c. Build the RAMDISK image.
RHEL
#mkinitrd -f initrd-[kernel_version].img [kernel_version]
SLES
#mk_initrd
d. Reboot the system to load the new RAMDISK image.
Solaris
Reboot the system to initialize the new driver.
VMware
Reboot the system to initialize the new driver.
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Fabric-based boot LUN discovery
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