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4 integrated striping firmware, 5 fusion-mpt support – MSI X2-109 v2 User Manual

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B-18

M S-9265 Server

4.4 Integrated Striping Firmware

This section describes features of the LSI Logic Integrated Striping (IS) firmware.

4.4.1 Host Interface

The IS host interface uses the Message Passing Interface, as described in the
Fusion-MPT Message Passing Interface Specification

, including Integrated

Striping. Through the Fusion-MPT interface, the host operating system has

access to the logical IS drive as well as the physical disks.

4.4.2 M etadata Support

The firmware supports metadata, which describes the IS logical drive configu-

ration stored on each member disk. When the firmware is initialized, each

member disk is queried to read the stored metadata to verify the configuration.

The usable disk space for each IS member disk is adjusted down to leave room

for this data.

4.4.3 SM ART Support

The IS firmware enables Mode 6 SMART on the IS member disks. Mode 6

SMART requires each physical disk to be polled at regular intervals. If a SMART

ASC/ASCQ code is detected on a physical IS disk, the firmware processes the

SMART data, and the last received SMART ASC/ASCQ is stored in non-volatile

memory. The IS volume does not support SMART directly, since it is just a logical

representation of the physical disks in the volume.

4.4.4 Disk Write Caching

Disk write caching is disabled by default on all IS volumes.

4.5 Fusion-MPT Support

The BIOS uses the LSI Logic Fusion-MPT interface to communicate to the SAS con-

troller and firmware to enable Integrated Striping. This includes reading the Fusion-

MPT configuration to gain access to the parameters that are used to define behavior

between the SAS controller and the devices connected to it. The Fusion-MPT drivers

for all supported operating systems implement the Fusion-MPT interface to communi-

cate with the controller and firmware.

9265v1.0-B(LSI SAS RAID).p65

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