Lenovo ThinkServer RD240 Guida di sicurezza

ThinkServer RD230, RD240, and TD230

MegaRAID SAS Software User Guide

ThinkServer RD230, RD240, and TD230

MegaRAID SAS Software User Guide

First Edition (June 2010)

LENOVO products, data, computer software, and services have been developed exclusively at private expense and

are sold to governmental entities as commercial items as defined by 48 C.F.R. 2.101 with limited and restricted

rights to use, reproduction and disclosure.

LIMITED AND RESTRICTED RIGHTS NOTICE: If products, data, computer software, or services are delivered

pursuant a General Services Administration ″GSA″contract, use, reproduction, or disclosure is subject to restrictions

set forth in Contract No. GS-35F-05925.

Note

Before using this information and the product it supports, be sure to read and understand the following:

vThe Important Notices that comes with your product

vThe Safety Information and the Warranty and Support Information on the ThinkServer Documentation DVD that comes with

your product

vAppendix C, “Notices.”

Preface 1

Preface

This document explains how to use the MegaRAID Storage Manager™

software, WebBIOS, and Command Line Interface (CLI) utilities to

configure, monitor, and maintain MegaRAID®Serial-attached SCSI

(SAS) RAID controllers and the storage-related devices connected to

them.

Audience

This document assumes that you are familiar with SAS controllers and

configuration utilities. The people who benefit from this book are network

administrators who need to create storage configurations on 7KLQN6HU

YHUSAS controllers.

Organization

This document has the following chapters and appendixes:

•Chapter 1, “Overview,” describes the SAS, Serial ATA (SATA) II, and

Solid State Disk (SSD) technologies, configuration scenarios, and

Technical Support information.

•Chapter 2, “Introduction to RAID,” describes RAID (Redundant Array

of Independent Disks), RAID functions and benefits, RAID

components, RAID levels, and configuration strategies. In addition, it

defines the RAID availability concept, and offers tips for configuration

planning.

•Chapter 3, “Full Disk Encryption,” describes the Full Disk Encryption

(FDE) features, terminology, and workflow.

•Chapter 4, “WebBIOS Configuration Utility,” explains how to use the

pre-boot WebBIOS Configuration Utility to create and manage

storage configurations.

Preface 2

•Chapter 5, “MegaRAID Command Tool,” explains how to use the

MegaRAID Command Tool to create and manage storage

configurations. The MegaRAID Command Tool is a CLI application

for SAS.

•Chapter 6, “MegaRAID Storage Manager Overview and Installation,”

introduces the main features of MegaRAID Storage Manager

software and explains how to install it.

•Chapter 7, “MegaRAID Storage Manager Window and Menus,”

describes the layout of the MegaRAID Storage Manager window and

lists the available menu options.

•Chapter 8, “Configuration,” describes how to use the MegaRAID

Storage Manager software to configure or reconfigure storage

devices, how to save configurations, and how to apply saved

configurations to a controller.

•Chapter 9, “Monitoring System Events and Storage Devices,”

explains how the MegaRAID Storage Manager software monitors the

status of storage configurations and devices and displays information

about them.

•Chapter 10, “Maintaining and Managing Storage Configurations,”

describes the MegaRAID Storage Manager maintenance functions

for virtual drives and other storage devices.

•Appendix A, “Events and Messages,” provides descriptions of the

MegaRAID Storage Manager events.

•Appendix B, “Glossary,” contains definitions of storage-related terms.

Conventions

Note: Notes contain supplementary information that can have an

effect on system performance.

Caution: Cautions are notifications that an action has the potential to

adversely affect equipment operation, system performance,

or data integrity.

•Appendix C “Notices,” contains Notices information.

MegaRAID SAS Software User Guide

Contents

Chapter 1

Overview

1.1 SAS Technology 1-1

1.2 Serial-attached SCSI Device Interface 1-3

1.3 Serial ATA II Features 1-3

1.4 Solid State Drive Features 1-4

1.4.1 Solid State Drive Guard 1-4

1.5 Dimmer Switch Feature 1-5

1.6 UEFI 2.0 Support 1-5

1.7 Configuration Scenarios 1-6

1.7.1 Valid Drive Mix Configurations with HDDs and

SSDs 1-8

Chapter 2

Introduction to RAID

2.1 RAID Description 2-1

2.2 RAID Benefits 2-1

2.3 RAID Functions 2-1

2.4 Components and Features 2-2

2.4.1 Physical Array 2-2

2.4.2 Virtual Drive 2-2

2.4.3 RAID Drive Group 2-3

2.4.4 Fault Tolerance 2-3

2.4.5 Consistency Check 2-5

2.4.6 Copyback 2-5

2.4.7 Background Initialization 2-6

2.4.8 Patrol Read 2-7

2.4.9 Disk Striping 2-7

Contents

2.4.10 Disk Mirroring 2-8

2.4.11 Parity 2-9

2.4.12 Disk Spanning 2-10

2.4.13 Hot Spares 2-11

2.4.14 Disk Rebuilds 2-13

2.4.15 Rebuild Rate 2-14

2.4.16 Hot Swap 2-14

2.4.17 Drive States 2-15

2.4.18 Virtual Drive States 2-15

2.4.19 Enclosure Management 2-16

2.5 RAID Levels 2-16

2.5.1 Summary of RAID Levels 2-16

2.5.2 Selecting a RAID Level 2-18

2.5.3 RAID 0 2-18

2.5.4 RAID 1 2-19

2.5.5 RAID 5 2-20

2.5.6 RAID 6 2-21

2.5.7 RAID 00 2-22

2.5.8 RAID 10 2-24

2.5.9 RAID 50 2-25

2.5.10 RAID 60 2-26

2.6 RAID Configuration Strategies 2-28

2.6.1 Maximizing Fault Tolerance 2-28

2.6.2 Maximizing Performance 2-30

2.6.3 Maximizing Storage Capacity 2-32

2.7 RAID Availability 2-33

2.7.1 RAID Availability Concept 2-33

2.8 Configuration Planning 2-34

2.8.1 Number of Drives 2-34

2.8.2 Drive Group Purpose 2-35

Chapter 3

Full Disk Encryption

3.1 Overview 3-1

3.2 Purpose 3-2

3.3 Terminology 3-2

3.4 Workflow 3-3

Contents

3.4.1 Enable Security 3-3

3.4.2 Change Security 3-4

3.4.3 Create Secure Virtual Drives 3-5

3.4.4 Import a Foreign Configuration 3-6

3.5 Instant Secure Erase 3-7

Chapter 4

WebBIOS Configuration Utility

4.1 Overview 4-1

4.2 Starting the WebBIOS CU 4-2

4.3 WebBIOS CU Main Screen Options 4-3

4.4 Creating a Storage Configuration 4-5

4.4.1 Selecting the Configuration with the Configuration

Wizard 4-6

4.4.2 Using Automatic Configuration 4-8

4.4.3 Using Manual Configuration 4-9

4.5 Selecting Full Disk Encryption Security Options 4-58

4.5.1 Enabling the Security Key Identifier, Security Key,

and Passphrase 4-59

4.5.2 Changing the Security Key Identifier, Security Key,

and Pass Phrase 4-64

4.5.3 Disabling the Drive Security Settings 4-71

4.5.4 Importing Foreign Configurations 4-73

4.6 Viewing and Changing Device Properties 4-74

4.6.1 Viewing and Changing Controller Properties 4-74

4.6.2 Viewing and Changing Virtual Drive Properties 4-78

4.6.3 Viewing Drive Properties 4-80

4.6.4 Viewing and Changing Battery Backup Unit

Information 4-82

4.7 Viewing System Event Information 4-85

4.8 Managing Configurations 4-87

4.8.1 Running a Consistency Check 4-87

4.8.2 Deleting a Virtual Drive 4-88

4.8.3 Importing or Clearing a Foreign Configuration 4-88

4.8.4 Migrating the RAID Level of a Virtual Drive 4-92

Contents

Chapter 5

MegaRAID Command Tool

5.1 Product Overview 5-2

5.2 Novell NetWare, SCO, Solaris, FreeBSD, and DOS

Operating System Support 5-4

5.3 Command Line Abbreviations and Conventions 5-4

5.3.1 Abbreviations Used in the Command Line 5-4

5.3.2 Conventions 5-5

5.4 Controller Property-Related Options 5-6

5.4.1 Display Controller Properties 5-6

5.4.2 Display Number of Controllers Supported 5-7

5.4.3 Enable or Disable Automatic Rebuild 5-7

5.4.4 Flush Controller Cache 5-7

5.4.5 Set Controller Properties 5-8

5.4.6 Display Specified Controller Properties 5-9

5.4.7 Set Factory Defaults 5-10

5.4.8 Set SAS Address 5-10

5.4.9 Set Time and Date on Controller 5-10

5.4.10 Display Time and Date on Controller 5-11

5.5 Patrol Read-Related Controller Properties 5-11

5.5.1 Set Patrol Read Options 5-11

5.5.2 Set Patrol Read Delay Interval 5-12

5.6 BIOS-Related Properties 5-12

5.6.1 Set or Display Bootable Virtual Drive ID 5-13

5.6.2 Select BIOS Status Options 5-13

5.7 Battery Backup Unit-Related Properties 5-13

5.7.1 Display BBU Information 5-14

5.7.2 Display BBU Status Information 5-14

5.7.3 Display BBU Capacity 5-15

5.7.4 Display BBU Design Parameters 5-16

5.7.5 Display Current BBU Properties 5-16

5.7.6 Start BBU Learning Cycle 5-17

5.7.7 Place Battery in Low-Power Storage Mode 5-17

5.7.8 Set BBU Properties 5-17

5.8 Options for Displaying Logs Kept at Firmware Level 5-18

5.8.1 Event Log Management 5-18

5.8.2 Set BBU Terminal Logging 5-19

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