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IBM MegaRAID 8480 manual Chapter Overview

Models: MegaRAID 8480

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Chapter 1

Chapter 1

Overview

This section provides a general overview of the Megaraid 8480 Storage Adapter with RAID control capabilities. It consists of the following sections:

•Section 1.1, “Overview”

•Section 1.2, “MegaRAID 8480 RAID Controller Description”

•Section 1.3, “General Description”

•Section 1.4, “Configuration Scenario”

•Section 1.5, “Benefits of the SAS Interface”

•Section 1.6, “Summary of MegaRAID 8480 RAID Controller Characteristics”

•Section 1.7, “Hardware Specifications”

•Section 1.8, “Technical Support”

1.1Overview

The MegaRAID 8480 Storage Adapter is a high-performance intelligent PCI Express-to-SCSI/Serial ATA II adapter with RAID control capabilities. The MegaRAID 8480 Storage Adapter provides reliability, high performance, and fault-tolerant disk subsystem management. It is an ideal RAID solution for the internal storage of workgroup, departmental, and enterprise systems. The MegaRAID 8480 Storage Adapter offers a cost-effective way to implement RAID in a server.

SAS technology brings a wealth of options and flexibility with the use of SAS devices and Serial ATA (SATA) II devices within the same storage infrastructure. However, SAS and SATA devices bring individual characteristics that make each one a more suitable choice depending on your storage needs. MegaRAID gives you the flexibility to combine these

MegaRAID 8480 Storage Adapter User’s Guide

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Copyright © 2006-2007 by LSI Corporation. All rights reserved.

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IBM MegaRAID 8480 manual Chapter Overview

Contents

USER’S GUIDE J u l y 2MegaRAID Storage Adapter This document contains copyrighted information of LSI Corporation Preface AudienceOrganization IBM Document Number 42D8845 Related Publications MegaRAID Battery Backup Unit User’s GuideMegaRAID 8480 Device Driver Installation User’s Guide IBM Document Number 42D8847system performance ConventionsRevision History Note Notes contain supplementary information that can affectPhone Safety InstructionsIBM Customer Support E-mailWhen Working Inside Your Computer viiiPreface Chapter ContentsMegaRAID 8480 Hardware Installation Chapter OverviewAppendix A Glossary of Terms and Abbreviations MegaRAID 8480 Storage Adapter CharacteristicsxContents ChapterContents FiguresCopyright 2006-2007 by LSI Corporation. All rights reserved xiiContentsTables Copyright 2006-2007 by LSI Corporation. All rights reserved xivContents1.1 Overview Chapter OverviewNote You cannot mix SAS and SATA drives within the same virtual disks MegaRAID Battery Backup Unit User’s Guide on the1.2 MegaRAID 8480 RAID Controller Description 1.3 General Description1.2.1 Controller Limitations 1.4 Configuration Scenario SAS/SATA II Device Figure 1.1 Example of LSI SAS Direct-Connect ApplicationConfiguration Scenario SAS/SATA II Device SAS/SATA II Device SAS/SATA II DevicePhysical Drives Required for Each RAID Level 1.4.1 Number of Physical Disks SupportedPhysical Drives Required for Each RAID Level Cont 1.5 Benefits of the SAS Interface1.6 Summary of MegaRAID 8480 RAID Controller Characteristics 1.5.1 PCI Express Architecture1.5.2 Operating System Support 1.6.2 SATA II Features 1.6.1 SAS Features1.6.4 Usability Features Complies with the PCI Express Specification, Revision 1.0a1.6.3 PCI Express Performance 1.6.6 Drive Roaming 1.6.5 Flexibility Features1.6.7 Drive Migration 1.7 Hardware Specifications Hardware Specifications1-13 MegaRAID 8480 Storage Adapter SpecificationsSee the Warranty and Support Information document for information 1.8 Technical Support2.1 Requirements Chapter MegaRAID Hardware Installation2.2 Quick Installation 2.3 Detailed InstallationMegaRAID 8480 Hardware Installation A license agreement Warranty information PCI Express Slot Figure 2.1 Example of MegaRAID Board Installation in ab. Use cables that meet the SAS specification 2.4 SAS Device Cables Figure 2.2 Internal SAS Cable for Connection to SAS and/orSATA II Physical Disks SAS Device Cables Figure 2.3 SATA II ConnectorsFigure 2.5 shows how to connect the external SAS cable from the Replacing a Failed Controller Containing Data in the LSIiTBBU02 2.5 Replacing a Failed Controller Containing Data in the LSIiTBBU022.6 After Installing the Storage Adapter 3.1 MegaRAID 8480 RAID Controller Chapter MegaRAID 8480 Storage Adapter CharacteristicsFigure 3.1 Card Layout for the MegaRAID 8480 RAID Controller 3.1.1 MegaRAID 8480 RAID ControllerType MegaRAID 8480 RAID Controller - ConnectorsConnector Description3.2 MegaRAID 8480 Storage Adapter Characteristics 3.3 Technical SpecificationsTable 3.2 MegaRAID 8480 Characteristics Storage Adapter Specifications 3.3.1 Storage Adapter SpecificationsFault Tolerance Features 3.3.2 Array Performance Features3.3.3 Fault Tolerance Array Performance Features3.3.5 Operating and Non-operating Conditions 3.3.4 Electrical Characteristics3.3.6 Safety Characteristics Maximum Power RequirementsCopyright 2006-2007 by LSI Corporation. All rights reserved MegaRAID 8480 Storage Adapter Characteristicsactive BIOSconfiguration Appendix A Glossary of Terms and Abbreviationshot spare hosthost adapter boardperipheral devices RAIDRAID levels striping SAS deviceSATA stripe size