LSI 25083 manual Chapter Overview

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Chapter 1

Overview

This chapter provides an overview of the MegaRAID 6Gb/s Serial

Attached SCSI/Serial ATA II controllers with RAID control capability.

It consists of the following sections:

Section 1.1, “Overview”

Section 1.2, “SAS Controller Descriptions”

Section 1.3, “General Description”

Section 1.4, “Configuration Scenarios”

Section 1.5, “Benefits of the SAS Interface”

Section 1.6, “Summary of SAS RAID Controller Characteristics”

Section 1.7, “Hardware Specifications”

Section 1.8, “Technical Support”

1.1Overview

The MegaRAID 6Gb/s SAS RAID controllers are high-performance intelligent PCI Express-to-SCSI/Serial ATA II adapters with RAID control capability. MegaRAID 6Gb/s SAS RAID controllers provide reliability, high performance, and fault-tolerant drive subsystem management. They are an ideal RAID solution for the internal storage of workgroup, departmental, and enterprise systems. MegaRAID 6Gb/s SAS RAID controllers offer a cost-effective way to implement RAID in a server.

SAS technology brings a wealth of options and flexibility with the use of SAS 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 6Gb/s SAS RAID Controllers User’s Guide

1-1

Copyright © 2009 by LSI Corporation. All rights reserved.

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Contents V e m b e r 2 0 0 USER’S GuideTrademark Acknowledgment Preface Organization AudienceMegaRAID SAS Software User’s Guide Document Number 80-00163-01 Rev. DFd1sp ConventionsRevision History Notation Example Meaning and UseSafety Instructions When Working Inside Your Computer Preface XPreface Contents Appendix a Glossary of Terms Abbreviations Customer Feedback XivContents Figures XviContents Tables XviiiContents Overview Chapter Overview2Overview SAS Controller Descriptions General Description General Description Configuration Scenarios Example of an LSI SAS Direct-Connect Application PCI Express Architecture Benefits of the SAS InterfaceOperating System Support Summary of SAS RAID Controller CharacteristicsSAS Features SAS RAID Controller Array Limitations SAS Array Limitations12Overview Usability Features Sata II FeaturesPCI Express Performance Drive Roaming Flexibility FeaturesDrive Migration 16Overview MegaRAID 6Gb/s SAS RAID Controller Features Hardware Specifications18Overview Mail Phone Support Technical Support20Overview Requirements Chapter MegaRAID SAS Hardware InstallationQuick Installation Detailed Installation Detailed InstallationBracket Screw Detailed Installation SAS Device Cables and Connectors After Installing the RAID ControllerSAS Device Cables and Connectors Sata II Connectors Serial Attached Scsi SAS Backplane Receptacle Connector Connecting the SAS 9260-8i RAID Controller to a Drive To Drive Enclosure Mini SAS Cable Plug Connector MegaRAID SAS Hardware Installation MegaRAID SAS 9240 RAID Controllers MegaRAID 6Gb/s SAS RAID Controller FamilyCard Layout for the MegaRAID SAS 9240-8i RAID Controller Jumper Type Description ConnectorsMegaRAID SAS 9260 RAID Controllers SAS 9240-4i/SAS 9240-8i RAID Controller JumpersCard Layout for the MegaRAID SAS 9260-8i RAID Controller JT1 SAS 9260-8i/SAS 9260DE-8i RAID Controller JumpersMegaRAID SAS Software User’s Guide for MegaRAID SAS 9261 RAID ControllerSAS 9261-8i RAID Controller Jumpers Card Layout for the MegaRAID SAS 9261-8i RAID ControllerJT6B2 MegaRAID SAS 9280 RAID ControllersSAS 9280-8e and SAS 9280DE-8e RAID Controllers Connector Description CommentsSAS 9280-8e and SAS 9280DE-8e RAID Controllers Card Layout for the MegaRAID SAS 9280-4i/4e RAID Controller SAS 9280-4i/4e RAID Controller ConnectorsIpmi Flash Serial MegaRAID SAS 6Gb/s RAID Controller CharacteristicsMegaRAID 6Gb/s SAS RAID Controller Characteristics Data Transfer Rates Scsi Features TerminationTechnical Specifications MegaRAID SAS 9240, SAS 9260, SAS 9261, and SAS RAID Controller SpecificationsRAID Controller Specifications Specification RAID ControllersMegaRAID SAS 9240, SAS 9260, SAS Array Performance FeaturesArray Performance Features Specification 9261, and SAS 9280 RAID ControllersPower Supply Requirements for SAS 9240 RAID Controllers Fault ToleranceElectrical Characteristics Fault Tolerance FeaturesPower Supply Requirements for SAS 9260 RAID Controllers 10 Power Supply for SAS 9240 RAID ControllersPCI Edge Connector State 11 Power Supply for SAS 9260 RAID Controllers 12 Power Supply for SAS 9261 RAID Controllers Power Supply Requirements for the SAS 9261 RAID ControllerPower Supply Requirements for SAS 9280 RAID Controllers 13 Power Supply for SAS 9280 RAID Controllers Safety CharacteristicsValidation ConfigurationDevice driver DomainHot spare HostHost adapter BoardRAID levels Peripheral devicesStripe size SAS deviceStriping Customer Feedback Excellent Good Average Fair Reader’s Comments