Appendix D Supplemental Information D-3
The mirroring is accomplished through the firmware of an LSI Logic controller that
supports the standard Fusion-MPT interface. The runtime mirroring of the boot disk
is transparent to the BIOS, drivers and OS. Host-based status software monitors the
state of the mirrored disks and reports any error conditions. The system is
configured with a second disk as a mirror of the first primary disk.
The IM feature uses the same device drivers as the standard controllers, providing
seamless and transparent fault tolerance. This eliminates the need for complex
backup software or expensive RAID hardware. The IM feature operates
independently from the OS, in order to conserve system resources. The BIOS-based
configuration utility makes it easy to configure a mirrored volume.
D.1.3 Zero-Channel RAID Not Supported
Zero-channel RAID cards are RAID controller cards that utilize the SCSI chip on the
motherboard to configure more advanced RAID setups. These servers do not
support zero-channel RAID cards.
D.1.4 Alternative Internal Drive RAID Configuration
For Sun Fire V40z Servers (Only)
To achieve other RAID levels not supported by the on-board LSI controller, you can
control the internal drives with a RAID card by routing the SCSI cable to it. Cabling
a full-function RAID card to the internal drives is supported on the Sun Fire V40z
server by routing a standard cable from the backplane to PCI slot 1.
Note – An extender cable attached to the existing cable allows connection to a RAID
card in PCI slot 1. Slot 1 is the half-length, horizontal slot under the power-supply
cage assembly.