Dell Emulex Family of Adapters - Manual (Page 254)

OneCommand™ Manager Application P010066-01A Rev. A
11. Configuring Boot from an FC SAN
Boot Types
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11. Configuring Boot from an FC SAN
You can use the OneCommand Manager application to configure a system to boot from
an attached FC/FCoE LUN. Boot from SAN allows servers on a storage network to
boot their operating systems directly from a SAN storage device, typically identified by
its WWPN and a LUN located on the device. By extending the server system BIOS, boot
from SAN functionality is provided by the BootBIOS contained on an Emulex adapter
in the server. When properly configured, the adapter then permanently directs the
server to boot from a LUN on the SAN as if it were a local disk.
Note: Boot from SAN is not supported via the CIM interface.
Note: COMSTAR ports do not support boot from SAN.
Boot Types
Using the Maintenance tab, you can enable, disable or configure boot from SAN for x86
BootBIOS, EFIBoot and OpenBoot (also know as FCode).

x86 BootBIOS works with the existing BIOS on x64 and x86 systems.

OpenBoot (FCode) works with the existing system BIOS on Solaris SPARC
systems using the SFS driver and on Linux PowerPC systems. OpenBoot is also
called FCode.

EFIBoot works with x64-based systems and provides 64-bit system boot
capability through the use of the EFI (Extensible Firmware Interface) Shell.
Emulex provides Universal Boot and Pair Boot code images that contain multiple types
of boot code. These images provide multi-platform support for boot from SAN.
Universal Boot and Pair Boot transparently determine your system platform type and
automatically execute the proper boot code image in the adapter. These code images
reside in adapter flash memory, allowing easier adapter portability and configuration
between servers.
The configuration regions on the adapter store the configuration data for each of these
boot types.
Note: x86 and OpenBoot share the same configuration memory space. You cannot
configure an adapter for both x86 and OpenBoot at the same time. If you try, a
message appears that the existing boot type configuration will be overwritten
by the new configuration.
Note: Boot from SAN configuration does not affect current system operation. The
changes only take effect upon reboot if you have configured it correctly.
Boot Device Parameters
The boot LUN for all three boot types is in the range of 0-255. EFIBoot and OpenBoot
(FCode) also support an 8-byte LUN, which you can use instead of the single-byte
LUN. You must select which LUN type to configure.