Lenovo ThinkServer RD240 Safety guide

ThinkServer RD230, RD240, and TD230
MegaRAID SAS Software User Guide

ThinkServer RD230, RD240, and TD230
MegaRAID SAS Software User Guide

First Edition (June 2010)
© Copyright Lenovo 2010.
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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