IBM ServeRAID M5025 User manual

®
ServeRAID M5025
SAS/SATA Controller
USER’S
GUIDE
September 2011

ii
Second Edition (September 2011)
© Copyright International Business Machines Corporation 2011. All rights reserved.
US Government Users Restricted Rights – Use, duplication or disclosure
restricted by GSA ADP Schedule Contract with IBM Corp.

ServeRAID M5025 SAS/SATA Controller User’s Guide iii
Preface
This book is the primary reference and user’s guide for the ServeRAID
M5025 SAS/SATA controller. It contains installation instructions and
specifications for the adapter. In addition, it explains how to install and
use the intelligent Battery Backup Unit (iBBU) that is used with the
ServeRAID-MR controller. In addition, it explains how to install the
ServeRAID M5000 Series Advanced Feature Key on the ServeRAID
M5025 SAS/SATA controller.
For details on how to configure the storage adapter, refer to the
ServeRAID-MR Software User’s Guide. For information about the
operating system drivers, refer to the ServeRAID-MR Device Driver
Installation User’s Guide.
Audience
This document assumes that the reader is familiar with RAID controllers
and related support devices. The people who benefit from this book are:
Engineers who are designing a system that will include the
ServeRAID M5025 SAS/SATA controller
Anyone installing the ServeRAID M5025 SAS/SATA controller in a
RAID system
End users who need to install the iBBU product on the ServeRAID
M5025 SAS/SATA controller
Engineers and managers who are evaluating BBU products for
possible use with ServeRAID-MR controllers
Note: The ServeRAID M5000 Series Battery Assembly is pre-
installed on the ServeRAID M5025 SAS/SATA controller.

iv Preface
End users who need to install a ServeRAID M5000 Series Advanced
Feature Key on a ServeRAID M5025 SAS/SATA controller
Organization
This document has the following chapters and appendices:
Chapter 1, Overview, provides a general overview of the ServeRAID
M5025 SAS/SATA controller.
Chapter 2, ServeRAID M5025 SAS/SATA Controller
Hardware Installation, describes the procedures for installing the
ServeRAID M5025 SAS/SATA controller.
Chapter 3, ServeRAID M5025 SAS/SATA Controller
Characteristics, provides the characteristics and technical
specifications for the ServeRAID M5025 SAS/SATA controller.
Chapter 4, Introduction to the Intelligent Battery Backup Unit,
describes the iBBU model and explains how it operates.
Chapter 5, Installing the Intelligent Battery Backup Unit, explains
how to install the iBBU model.
Chapter 6, Using the Intelligent Battery Backup Unit, explains
how to use and monitor the iBBU model and how to replace it.
Chapter 7, Intelligent Battery Backup Unit Specifications, has
complete technical information and specifications for the iBBU
model.
Chapter 8, Installing a ServeRAID M5000 Series Advanced
Feature Key, describes how to install the ServeRAID M5000 Series
Advanced Feature Key.
Appendix A, Notices, contains information about the warranty,
patents, license inquiries, and trademarks.
Appendix B, Glossary of Terms and Abbreviations, lists and
explains the terms and abbreviations used in this manual.

Preface v
Related Publications
ServeRAID-MR Device Driver Installation User’s Guide
IBM Document Number: 46M1382
This document explains how to install the ServeRAID-MR device driver
for your operating system. The information in this document is
independent of the back-end bus and applies to the ServeRAID-MR
controllers.
ServeRAID-MR Software User’s Guide
IBM Document Number: 46M1381
This document explains how to use the MegaRAID Storage Manager,
WebBIOS, and Command Line Interface (CLI) utilities to configure,
monitor, and maintain the ServeRAID-MR controller and the
storage-related devices connected to them.
IBM Systems Safety Notices
IBM Document Number: G229-9054-01
This book contains safety notices from IBM Systems documentation. The
safety notices include danger and caution notices.
Notices and Statements in This Document
The caution and danger statements in this document are also in the
multilingual IBM Systems Safety Notices document, which is on the
ServeRAID-MR Documentation CD. Each statement is followed by a
reference number that you can use to locate the corresponding
statement in your language in the IBM Systems Safety Notices
document. The following notices and statements are used in this
document:
Note: These notices provide important tips, guidance, or advice.
Important: These notices provide information or advice that might help
you avoid inconvenient or problem situations.

vi Preface
Attention: These notices indicate potential damage to programs,
devices, or data. An attention notice is placed just before
the instruction or situation in which damage might occur.
CAUTION: These statements indicate situations that can be potentially
hazardous to you. A caution statement is placed just before
the description of a potentially hazardous procedure step or
situation.
DANGER:These statements indicate situations that can be poten-
tially lethal or extremely hazardous to you. A danger
statement is placed just before the description of a
potentially lethal or extremely hazardous procedure
step or situation.
Revision History
IBM Customer Support
Web site:
http://www.ibm.com/support/us/en/
Safety Instructions
Use the following safety guidelines to help protect your computer system
from potential damage and to ensure your own personal safety.
Note: Use the ServeRAID M5025 SAS/SATA controller
with UL-listed Information Technology Equipment (ITE)
products only.
Edition/Date Remarks
Second Edition
September 2011
Updated Chapter 6.
First Edition
August 2010
Initial release of document.

Preface vii
DANGER
When working on or around the system, observe the following precautions:
Electrical voltage and current from power, telephone, and communication
cables are hazardous. To avoid a shock hazard:
Connect power to this unit only with the provided power cord. Do not use
the provided power cord for any other product.
Do not open or service any power supply assembly.
Do not connect or disconnect any cables or perform installation,
maintenance, or reconfiguration of this product during an electrical storm.
The product might be equipped with multiple power cords. To remove all
hazardous voltages, disconnect all power cords.
Connect all power cords to a properly wired and grounded electrical
outlet. Ensure that the outlet supplies proper voltage and phase rotation
according to the system rating plate.
Connect any equipment that will be attached to this product to properly
wired outlets.
When possible, use one hand only to connect or disconnect signal cables.
Never turn on any equipment when there is evidence of fire, water, or
structural damage.
Disconnect the attached power cords, telecommunications systems,
networks, and modems before you open the device covers, unless
instructed otherwise in the installation and configuration procedures.
Connect and disconnect cables as described in the following procedures
when installing, moving, or opening covers on this product or attached
devices.
To disconnect:
1. Turn off everything (unless instructed otherwise).
2. Remove the power cords from the outlets.
3. Remove the signal cables from the connectors.
4. Remove all cables from the devices.
To connect:
1. Turn off everything (unless instructed otherwise).
2. Attach all cables to the devices.
3. Attach the signal cables to the connectors.
4. Attach the power cords to the outlets.
5. Turn on the devices.
(D005)

viii Preface
CAUTION:
The battery is a lithium ion battery and can present a fire or chemical burn
hazard if mistreated. Do not dissassemble, heat above 100 C (212 F), or
incinerate. To avoid possible explosion, do not burn. Keep away from
children. Exchange only with the IBM-approved part. Recycle or discard the
battery as instructed by local regulations. In the United States, IBM has a
process for the collection of this battery. For information, call 1-800-426-
4333. Have the IBM part number for the battery unit available when you call.
(C007)
Protecting against Electrostatic Discharge – Static electricity can
harm delicate components inside your computer. To prevent static
damage, discharge static electricity from your body before you touch any
of your computer’s electronic components, such as the microprocessor.
You can do so by touching an unpainted metal surface, such as the
metal around the card-slot openings at the back of the computer.
As you continue to work inside the computer, periodically touch an
unpainted metal surface to remove any static charge your body may
have accumulated. In addition to the preceding precautions, you can also
take the following steps to prevent damage from electrostatic discharge:
When unpacking a static-sensitive component from its shipping
carton, do not remove the component from the antistatic packing
material until you are ready to install the component in your
computer. Just before unwrapping the antistatic packaging, be sure
to discharge static electricity from your body.
When transporting a sensitive component, first place it in an
antistatic container or packaging.
Handle all sensitive components in a static-safe area. If possible, use
antistatic floor pads and workbench pads.

ServeRAID M5025 SAS/SATA Controller User’s Guide ix
Contents
Chapter 1
Overview
1.1 Overview 1-1
1.2 ServeRAID M5025 SAS/SATA Controller Description and
Limitations 1-3
1.2.1 Controller Limitations 1-3
1.3 General Description 1-4
1.4 Configuration Scenarios 1-5
1.4.1 Number of Physical Disks Supported 1-7
1.5 Benefits of the SAS Interface 1-7
1.5.1 PCI Express Architecture 1-8
1.5.2 Operating System Support 1-8
1.6 Summary of the ServeRAID M5025 SAS/SATA Controller
Characteristics 1-9
1.6.1 SAS Features 1-10
1.6.2 SAS Array Limitations 1-10
1.6.3 SATA II Features 1-11
1.6.4 PCI Express Performance 1-12
1.6.5 Usability Features 1-12
1.6.6 Flexibility Features 1-12
1.6.7 Drive Roaming 1-13
1.6.8 Drive Migration 1-14
1.7 Hardware Specifications 1-15
1.8 Technical Support 1-16
Chapter 2
ServeRAID M5025 SAS/SATA Controller Hardware Installation
2.1 Requirements 2-1
2.2 Quick Installation 2-2

xContents
2.3 Detailed Installation 2-2
2.4 After Installing the Controller 2-6
2.5 Connecting the ServeRAID M5025 Controller to a Drive Enclosure
2-6
2.6 Replacing a Failed Controller Containing Data in the iBBU 2-7
Chapter 3
ServeRAID M5025 SAS/SATA Controller Characteristics
3.1 ServeRAID M5025 SAS/SATA Controller 3-1
3.1.1 Board Layout and Connector Information 3-1
3.2 ServeRAID M5025 SAS/SATA Controller Characteristics 3-3
3.3 Technical Specifications 3-3
3.3.1 Controller Specifications 3-4
3.3.2 Array Performance Features 3-5
3.3.3 Fault Tolerance 3-5
3.3.4 Power Supply Requirements for the ServeRAID M5025
SAS/SATA Controller 3-6
3.3.5 Operating and Non-operating Conditions 3-7
3.3.6 Safety Characteristics 3-7
Chapter 4
Introduction to the Intelligent Battery Backup Unit
Chapter 5
Installing the Intelligent Battery Backup Unit
5.1 Installing the iBBU on the ServeRAID M5025 Controller 5-2
5.1.1 Connecting the iBBU Remotely to the ServeRAID M5025
SAS/SATA Controller 5-5
Chapter 6
Using the Intelligent Battery Backup Unit
6.1 Monitoring the IBBU with the MegaRAID Configuration Utilities
6-2
6.1.1 Monitoring the iBBU with the WebBIOS Configuration
Utility 6-2
Setting the Learn Delay Interval 6-5
Setting the Learn Mode 6-6