LSI SAS2 manual Introduction to the Integrated RAID Solution, Overview, Features, Enhanced RAID 1E

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SAS2 Integrated RAID Solution User Guide

Chapter 1: Introduction to the Integrated RAID Solution Overview

Chapter 1

Introduction to the Integrated RAID Solution

This chapter provides an introduction to the features and benefits of the LSI Integrated RAID solution for LSI SAS2 controllers.

1.1 Overview

The LSI Integrated RAID solution provides cost benefits for the server or workstation

 

market that requires the extra performance, storage capacity, and/or redundancy of a

 

 

RAID configuration. The LSI Integrated RAID solution includes the following RAID

 

features:

 

The Integrated Mirroring solution, which provides features of RAID 1

 

The Integrated Mirroring + Striping solution, which provides features of RAID 10

 

The Integrated Mirroring Enhanced solution, which provides features of RAID 1

 

Enhanced (RAID 1E)

 

The Integrated Striping solution, which provides features of RAID 0

 

By simplifying the configuration options and by providing firmware support in its SAS2

 

host adapters, LSI can offer the Integrated RAID solution at a lower cost than a

 

hardware RAID implementation.

LSI Fusion-MPT™ firmware supports Integrated Mirroring volumes, Integrated Mirroring

+Striping volumes, Integrated Mirroring Enhanced volumes, and Integrated Striping volumes. You can create up to two Integrated RAID volumes on each LSI SAS2 controller.

The LSI Integrated RAID solution supports the following LSI SAS2 controllers and the host bus adapters based on these controllers:

LSISAS2004

LSISAS2008

LSISAS2108

LSISAS2208

LSISAS2304

LSISAS2308

LSI Integrated RAID firmware uses the same device drivers as the standard LSI Fusion-MPT-based controllers. This eliminates the need for complex backup software or expensive RAID hardware. To conserve system resources, the Integrated RAID firmware operates independently from the operating system. The BIOS-based configuration utility, documented in Chapter 3 and Chapter 5, makes it easy to configure mirrored and striped volumes. The Integrated RAID solution is currently available as an optional component of the Fusion-MPT architecture on LSI SAS2 controllers.

LSI Corporation Confidential August 2010

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Contents SAS2 Integrated RAID Solution Revision History Table of Contents Table of Contents Features Introduction to the Integrated RAID SolutionOverview Enhanced RAID 1EBenefits and Features Types of mirrored arrays Overview of Integrated RAID Mirrored VolumesIntroduction Operation of Mirrored Volumes Typical Integrated Mirroring Implementation Integrated Mirroring Enhanced with Three Disks Mirrored Volume Features SAS2 Integrated RAID Solution User Guide Mirrored Volume Creating Mirrored VolumesConfiguration Overview Please wait, invoking SAS Configuration UtilityCreate New Array window appears Select Create RAID 1 VolumeSelect Create RAID 1E Volume Expanding an Integrated Mirroring Volume with OCE Select New Array Type window appears Manage Array window appearsArray on this adapter Following figureSmart support Manage Hot Spares window appearsHot Spare status changes to Yes Press C to create the hot spare diskOther Configuration Tasks Currently inactive Follow these steps to activate a selected volumePress Enter Select RAID Properties, and then press EnterSAS2 Bios CU, select an adapter from the Adapter List Follow these steps to select a boot diskHighlight SAS Topology, and press Enter SAS Topology window appearsBoot Device on SAS Topology Window Overview of Integrated Striping Boot disk or as a data diskVolumes can consist of two-to-ten disks Integrated Striping Example Integrated Striping DescriptionCreating Integrated Striping Volumes Creating Integrated Striping VolumesSelect Create RAID 0 Volume Viewing Volume Properties Activating an Array Select Delete Array Following figure shows Alternate deviceSAS2 Integrated RAID Solution User Guide Requirements Using the SAS2 Integrated RAID Configuration UtilityHardware and Software EFI Interface Description CommandsGB of capacity on the disk drive Command to get the enclosure and slot numbers of a driveMPI2 specification and is specific for SSD drives only Following fields of IOC Page 6 specify the configuration VolumeName a user-specified string to identify the volume Appearing while the command is runningSas2ircu controller# display filename Sas2ircu controller# delete nopromptInitiator ID 112Drive Type Enclosure information Enclosure# Logical IDFailed FLD The volume has failed Configuration has changed or a drive has failedMissing MIS The volume is missing Initializing Init The volume is initializingSas2ircu controller# status Sas2ircu controller# hotspare delete EnclosureBay Physical disk I/Os Quiesced or Not quiesced  Volume status Enabled or DisabledSas2ircu list NoneSas2ircu controller# activate volumeId Sas2ircu controller# constchk volumeId nopromptSas2ircu controller# logir action filename noprompt
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