Adaptec Workstation xw4100 Safety guide

R
Adaptec SCSI RAID
2120S/2200S
Software User’s Guide
UG.book Page i Saturday, October 26, 2002 12:08 PM

ii
Copyright
© 2002 Adaptec, Inc. All rights reserved. No part of this publication may be
reproduced, stored in a retrieval system, or transmitted in any form or by any
means, electronic, mechanical, photocopying, recording or otherwise, without the
prior written consent of Adaptec, Inc., 691 South Milpitas Blvd., Milpitas, CA 95035.
Trademarks
Adaptec and the Adaptec logo are trademarks of Adaptec, Inc., which may be
registered in some jurisdictions.
Windows NT, Windows 2000, Windows.NET and Windows XP are trademarks of
Microsoft Corporation in the US and other countries, used under license.
Linux is trademarked by Linus Torvalds.
Red Hat® Linux® consists of hundreds of software modules, some developed by
Red Hat and many developed by other members of the open source community.
Those authors hold the copyrights in the modules or code they developed. At the
same time, the combined body of work that constitutes Red Hat® Linux® is a
collective work which has been organized by Red Hat, and Red Hat holds the
copyright in that collective work. Red Hat then permits others to copy, modify and
redistribute the collective work. To grant this permission Red Hat usually uses the
GNU General Public License ("GPL") version 2 and Red Hat's own End User License
Agreement. Although software licensed under the GPL is "open source software,"
Red Hat retains ownership of the copyright in its collective work.
Adobe, the Adobe logo, Acrobat, Acrobat Capture, and Distiller are trademarks of
Adobe Systems Incorporated.
Novell and NetWare are trademarks of Novell, Inc.
Open UNIX 8, UnixWare 7, and SCO OpenServer are trademarks of the SCO Group,
Inc.
All other trademarks are the property of their respective owners.
Changes
The material in this document is for information only and is subject to change
without notice. While reasonable efforts have been made in the preparation of this
document to assure its accuracy, Adaptec, Inc. assumes no liability resulting from
errors or omissions in this document, or from the use of the information contained
herein.
Adaptec reserves the right to make changes in the product design without
reservation and without notification to its users.
Disclaimer
IF THIS PRODUCT DIRECTS YOU TO COPY MATERIALS, YOU MUST HAVE
PERMISSION FROM THE COPYRIGHT OWNER OF THE MATERIALS TO
AVOID VIOLATING THE LAW WHICH COULD RESULT IN DAMAGES OR
OTHER REMEDIES.
UG.book Page ii Saturday, October 26, 2002 12:08 PM

iii
Contents
1 Introduction
Document Overview 1-1
Organization 1-1
Additional Supplied Documentation 1-2
Supported RAID Types 1-2
RAID-0 1-3
RAID-1 1-3
RAID-5 1-4
RAID-10 1-5
RAID-50 1-6
Simple Volume 1-6
Spanned Volume 1-6
RAID Volume 1-7
Features 1-7
Optimized Disk Utilization 1-7
Array Reconfiguration 1-7
Drive Enclosures 1-8
Hot Spares 1-8
Automatic Rebuild On Replacement 1-9
SCSI Devices Supported 1-9
Supported Controllers 1-9
UG.book Page iii Saturday, October 26, 2002 12:08 PM

iv
Adaptec SCSI RAID 2120S/2200S Software User’s Guide
2 Using Adaptec RAID Configuration
Using the Array Configuration Utility 2-2
Managing Arrays 2-2
Creating Arrays 2-6
Initializing Disk Drives 2-9
Rescanning Disk Drives 2-9
Using the SCSISelect Utility 2-10
Starting and Exiting SCSISelect 2-10
Using the SCSISelect Menus 2-10
Using the Controller Configuration Utility 2-11
Using the SCSI Configuration Utility 2-13
Using the Disk Utilities 2-15
Viewing the Event Log 2-16
3 Adaptec Storage Manager-Browser Edition
About Adaptec Storage Manager 3-2
Login to Adaptec Storage Manager 3-4
Installing a Security Certificate 3-6
Understanding Adaptec Storage Manager 3-7
Pop Up Tool Tips 3-8
Physical Devices 3-8
Logical Devices 3-11
Creating Arrays 3-12
Advanced Options 3-13
Creating and Deleting Hot Spares 3-16
Creating Hot Spares 3-16
Deleting Hot Spares 3-16
Deleting Arrays 3-17
Modifying Arrays 3-17
User Interface Options 3-19
Viewing Events 3-20
Help 3-20
Displaying and Modifying Properties 3-21
Applying Changes 3-21
Controller Properties 3-21
Channel Properties 3-23
UG.book Page iv Saturday, October 26, 2002 12:08 PM

v
Contents
Physical Device Properties 3-23
Enclosure Properties 3-25
Logical Device Properties 3-26
Viewing and Creating Tasks 3-27
Task Viewer Tab 3-27
New Tasks Tab 3-28
About Adaptec Storage Manager Notifier Service 3-29
Notifier Service Event Levels 3-29
Enabling and Configuring the Notifier Service 3-31
Controlling ARCPD for Windows 2000 3-31
Controlling ARCPD for Unix and Linux 3-31
Controlling ARCPD for NetWare 3-32
Configuring the Notifier Service 3-32
System Event Log 3-32
Configuring E-mail Notification 3-33
Reconfiguring E-mail Notification 3-34
UG.book Page v Saturday, October 26, 2002 12:08 PM

vi
Adaptec SCSI RAID 2120S/2200S Software User’s Guide
4 Using the Command Line Interface
Introducing the Command Line Interface 4-2
Accessing the Command Line Interface 4-2
Terminology 4-3
Using the CLI 4-4
Opening and Closing a Controller 4-4
Creating Single-Level Arrays 4-4
Deleting Arrays 4-7
Enabling Spares 4-8
Displaying Controller Information 4-9
Displaying Disk Information 4-11
Displaying Array Information 4-13
The CLI Commands 4-16
General Control Commands 4-16
Container (Array) Commands 4-18
Controller Commands 4-29
Diagnostic Commands 4-32
Disk Commands 4-34
Logfile Commands 4-38
Task Commands 4-39
Enclosure Commands 4-40
Using Automated Command Scripts 4-44
A Glossary
UG.book Page vi Saturday, October 26, 2002 12:08 PM

1-1
1
Introduction
In this Chapter
Document Overview
This section reviews the contents of the Adaptec SCSI RAID Software
User’s Guide and includes an introduction to the major features of
your controller, as well as some of the terminology used.
Organization
Chapter 1, Introduction, briefly describes contents of the guide, the
software supplied with your RAID controller and the capabilities
of the controller.
Chapter 2, Using Adaptec RAID Configuration, introduces ARC, a
BIOS-based utility, that allows you to configure various features of
the RAID controller, as well as create and manage arrays. This
chapter provides step-by-step instructions on how to use ARC.
Document Overview 1-1
Supported RAID Types 1-2
Features 1-7
SCSI Devices Supported 1-9
Supported Controllers 1-9
UG.book Page 1 Saturday, October 26, 2002 12:08 PM

1-2
Adaptec SCSI RAID 2120S/2200S Software User’s Guide
Chapter 3, Adaptec Storage Manager-Browser Edition, provides an in-
depth look at Adaptec Storage Manager, an easy-to-use storage
configuration application that supports both local and remote
management. This chapter describes the user interface, and
provides step-by-step instructions on using Adaptec Storage
Manager to configure and manage your storage subsystem.
Chapter 4, Using the Command Line Interface, introduces the CLI, a
text command line-based interface that supports the full feature set
of Adaptec storage controllers. This chapter provides an
introduction to using the CLI to manage your storage subsystem.
More detailed coverage is provided in the Software Reference Guide
supplied on the CD with your controller.
Appendix A, Glossary, provides an alphabetical list of terms with
brief definitions.
Additional Supplied Documentation
Other documentation supplied with your controller:
■Quick Install Guide—A printed booklet that describes
installing your controller and software in commonly used
situations.
■Installation Guide—Supplied in PDF form on the same CD as
this guide, the Installation Guide provides more detailed
instructions on installing your controller and software, as well
as covering less commonly used configurations.
■Software Reference Guide—Comprehensive information on
the CLI, and DOS ACU.
Supported RAID Types
RAID is an acronym for either Redundant Array of Independent
Disks or Redundant Array of Inexpensive Disks. The goal of RAID
is to provide higher capacity, performance and/or reliability from
combinations of disk drives than it is practical to achieve with a
single drive.
UG.book Page 2 Saturday, October 26, 2002 12:08 PM

1-3
Introduction
Adaptec RAID controllers support the following types of array:
RAID-0
A RAID-0 is created by striping data across two or more disk
drives. Simple striping like this creates no redundancy to protect
the data, but by sharing the load equally across multiple drives, it
does provide the best read and write performance of any RAID
type.
RAID-1
A RAID-1 must contain only two disk drives. All data stored on the
array is written to both drives. This duplication, or mirroring, of
the data provides redundancy, ensuring that if one drive fails no
data loss will occur.
Data 0
Data 3
Data 6
Data 9
RAID-0
Data 2
Data 5
Data 8
Data 11
Data 1
Data 4
Data 7
Data 10
Drive Drive Drive
Data 0
Data 1
Data 2
Data 3
RAID-1
Data 0
Data 1
Data 2
Data 3
Drive Drive
UG.book Page 3 Saturday, October 26, 2002 12:08 PM

1-4
Adaptec SCSI RAID 2120S/2200S Software User’s Guide
The cost of this redundancy is inefficient use of capacity, because
all data is written to both drives, only half of the total capacity is
available.
RAID-1 offers no write performance advantage over a single drive,
but read performance benefits from being able to share the load
between two drives.
RAID-5
A minimum of three drives is required to create a RAID-5. Like a
RAID-0, data is striped across the drives, however in the case of a
RAID-5, the capacity of one drive is used to store parity
information. The controller generates this parity data every time
data is written to the array, and it is distributed in stripes across all
the drives.
In the event of a drive failure, the contents of the failed drive can be
rebuilt from the data and parity on the remaining drives.
Using parity minimizes the capacity cost of redundancy. Since only
one drive is used to store parity, the worst case of a three-drive
RAID-5 only loses one third of the total capacity, for arrays with
more drives the lost capacity is smaller.
RAID-5 write performance is limited by the need to generate parity
data for every write. Read performance is good because the load is
spread equally across all the drives.
Data 0
Data 3
Data 6
Parity 3
RAID-5
Parity 0
Data 5
Data 8
Data 11
Data 2
Parity 1
Data 7
Data 10
Data 1
Data 4
Parity 2
Data 9
Drive Drive Drive Drive
UG.book Page 4 Saturday, October 26, 2002 12:08 PM