Integrated striping overview – MSI X2-109 v2 User Manual

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M S-9265 Server

4. Integrated Striping Overview

This section provides an overview of the LSI Logic Integrated Striping (IS) feature.

4.1 Introduction

The LSI Logic Integrated Striping (IS) feature is useful for applications that require the

faster performance and increased storage capacity of striping. The low-cost IS

feature has many of the advantages of a more expensive RAID striping solution. A

single IS logical drive may be configured as the boot disk or as a data disk.

The IS feature is implemented with controller firmware that supports the Fusion-MPT

Interface. IS provides better performance and more capacity than individual disks,

without burdening the host CPU. The firmware splits host I/Os over multiple disks and

presents the disks as a single logical drive. In general, striping is transparent to the

BIOS, the drivers, and the operating system.

The SAS BIOS CU is used to configure IS volumes, which can consist of two to eight

disks.

Note: Integrated Mirroring and Integrated Striping volumes can be configured

on the same LSI logic SAS controller.

4.2 IS Features

Integrated Striping supports the following features:

Support for volumes with two to eight drives

Support for two IS volumes, with up to 10 drives total, on a controller. An IS

volume can also be combined with an IM or IME volume.

Note: Currently available LSI Logic SAS controllers support a maximum of eight

drives. All drives in a volume must be connected to the same SAS controller.

Presents a single virtual drive to the OS for each configured volume

Support for both SAS and SATA drives, although the two types of drives

cannot be combined in one volume

Fusion-MPT architecture

Easy-to-use SAS BIOS configuration utility

Error notification

Use of metadata to store volume configuration on disks

OS-specific event log

Error display inside the Fusion-MPT BIOS

SES status LED support for drives used in IS volumes

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

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