Sun Microsystems Sun Fire X4100 - Manual (Page 250)

E-2 Sun Fire X4100 and Sun Fire X4200 Servers Service Manual • June 2006
E.1 Fusion-MPT SAS BIOS Overview
The Fusion-MPT SAS BIOS features include:
■ Configuration for up to 256 adapters; any four can be chosen for INT13 (bootrom)
support
■ Support for Message Passing Technology (MPT)
■ Support for the LSI53C1064 devices
■ Support for SAS devices
Note – At this time, the Sun Fire X4100 and Sun Fire X4200 servers are shipped with
support for the SAS1064 controller only. SATA devices are not supported in these
servers at this time.
■ Support for Integrated RAID initialization (with proper firmware)
The SAS BIOS is the bootable ROM code that manages SAS hardware resources. It is
specific to a family of LSI Logic Fusion-MPT SAS controllers or processors. The
Fusion-MPT SAS BIOS integrates with a standard system BIOS, extending the
standard disk service routine provided through INT13h.
During the boot time initialization, the SAS BIOS determines whether the system
BIOS has already installed other hard disks, such as an IDE drive. If such drives are
already installed, the SAS BIOS maps any SAS drives it finds behind these drives.
Otherwise, the SAS BIOS installs drives starting with the system boot drive. In this
case, the system boots from a drive controlled by the SAS BIOS. The LSI Logic SAS
BIOS supports the BIOS Boot Specification (BBS).
E.1.1 Boot Initialization With BIOS Boot Specification
(BBS)
The Fusion-MPT SAS BIOS supports the BIOS Boot Specification (BBS), which allows
you to choose which device to boot from by selecting the priority.
To use this feature, the system BIOS must also be compatible with the BBS. If the
system supports the BBS, you can use the system BIOS Setup menu to select the boot
order and drive order. In the system BIOS Setup, the Boot Connection Devices menu
lists the available boot options. Use that menu to select the device and rearrange the
order. Then exit to continue the boot process.