HP (Hewlett-Packard) Legato Networker User Manual

Legato NetWorker

Module for EMC CLARiiON®for Oracle

Administrator’s Guide

Release 7.0

Release 1.0

Disaster Recovery Guide

© 2003, Legato Systems, Inc. All rights reserved. This product may be covered by one or more of the following patents: U.S. 5,359,713; 5,519,853; 5,649,152; 5,799,141; 5,812,748; 5,835,953; 5,978,565; 6,073,222; 6,085,298; 6,145,089; 6,308,283; 6,324,654; 6,338,126. Other U.S. and international patents pending.

Legato NetWorker, Release 7.0, Disaster Recovery Guide

March 2003 22-1949-06

Legato and the Legato logo are registered trademarks, and Legato NetWorker, NetWorker, LM:, Celestra, GEMS, SmartMedia, Co-StandbyServer, RepliStor, SnapShotServer, QuikStartz, SAN Academy, AlphaStor, ClientPak, Xtender, XtenderSolutions, DiskXtender , ApplicationXtender , Archi veXtender , and EmailXtender are trademarks or r egistered trademarks of Legato Systems, Inc. This is a nonexhaustive list of Le gato trademarks, and other trademarks may be the property of their respec tive owners.

The following may be trademarks or registered trademarks of the companies identified next to them, and may be used in this document for identification purposes only.

Acrobat, Adobe / Adobe Systems, Inc . Apple, Macintosh / Apple Computer, Inc. AIX, DB2, DB2 Universal Database, DYNIX, DYNIXptx, IBM, Informix, Lotus, Lotus Notes, OS/2, PTX, ptx/ADMIN, Raid Plus, ServeRAID, Sequent, Symmetry, Tivoli , / IBM Corporation InstallShield / In stallS hield Softw are Corp orati on UNIX / X/Open Company Ltd Access Logix, Celerra, CLARiiON, EMC, EMC2, MirrorView , MOSAI C:2 000 , Navi s phere, SnapView, SRDF, Symmetrix,

TimeFi nd er / EMC Corporation Date ONTAP, NetApp, NetCache, Network Appliance, SnapMirror, SnapRestore / Network Appli a nce, Inc. DLTtape / Quantum Corporation Fujitsu / Fujitsu, Ltd. Hewlett-Packard, HP, HP-UX, HP Tru64, HP TruCluster / Hewlett-Packard Company IntraNetWare, NetWare, Novell / Novell, Inc. Microsoft, MS-DOS, SQL Server, Windows, Windows NT / Microsoft Corporation Intel / Intel Corporation Linux / Linus Torvalds Netscape, Netscape Navigator / Netscape Communications Corporation IRIX, OpenVault, SGI / Silicon Graphics, Inc. Oracle, Oracle8i, Oracle 9i / Oracle Corporation Red Hat / Red Hat, Inc. R/3, SAP / SAP AG Caldera Systems, SCO, SCO OpenServer, UnixWare / Caldera, Inc. SPARC / SPARC International, Inc. Solaris, Solstice Backup, Sun, SunOS, Sun StorEdge / Sun Microsystems, Inc. REELbackup, StorageTek / Storage Technology Corporation

Sybase / Sybase, Inc. VERITAS / VERITAS Software Corporation Unicenter / Computer Associates International, Inc. Tu rbolin ux / Turbolinux, Inc. SuSE / SuSE, Inc. Check Point, FireWal l-1 / Check Point Software Technologies, Lt d.

Notes:

a. UNIX is a registered trademark in the United States and other countries, licensed exclusively through X/Open Company, Ltd. b. Products bearing SPARC trademarks are based on an architecture developed by Sun Microsystems, Inc.

All other brand or product names may be trademarks or registered trademarks of their respective owners.

Legato Systems, Inc. End-User License Agreement

THIS PRODUCT CONTAINS CERTAIN COMPUTER PROGRAMS AND OTHER PROPRIETARY MATERIAL, THE USE OF WHICH IS SUBJECT TO THIS END-USER LICEN SE AGREE MENT (THE “AGREEM ENT”). DO NOT PROCEE D WITH THE IN STALLATION OF THIS PRODUCT U NTIL YOU (LA TER DEFINED AS LICENS EE) HAVE READ THIS AGREEMENT AND AGREE TO BE BOUND BY AN D BEC OM E A PARTY TO THIS AGREEMENT. BY PROCEEDING WITH THE INSTALLATION OF THIS PRODUCT (OR AUTHORIZ IN G ANY OTHER P ERS ON T O DO SO) , YOU AND YOUR COMPANY ACCEPT THIS AGREEMENT AND YOU REPRESENT THAT YOU ARE AUTHORIZED TO DO SO. IF YOU ARE ACCESSING THE PRODUCT ELECTRONICALLY INDICATE YOUR ACCEPTANCE OF THESE TERMS BY SELECTING THE “ACCEPT” BUTTON AT THE END OF THE AGREEMENT. IF YOU DO NOT AGREE TO THE TERMS OF THIS AGREEMENT, YOU MAY RETURN THIS PRODUCT, ALL MEDIA AND DOCUMENTATION, AND PROOF OF PAYMENT, TO THE PLACE YOU OBTAINED THEM FOR A FULL REFUND WITHIN THIRTY (30) DAYS OF FIRST ACQUIRING THIS PRODUCT OR, IF THE PRODUCT IS ACCESSED ELECTRONICALL Y, SELECT THE “DECLINE” BUTTON AT THE END OF THIS AGREEMENT AND RETURN PROOF OF PAYMENT IN ACCORDANCE WITH THE ABOVE REFERENCED RETURN/REFUND PROCESS. WRITTEN APPROVAL IS NOT A PREREQUISITE TO THE VALIDITY OR ENFORCEABILITY OF THIS AGREEMENT AND NO SOLICITATION OF ANY SUCH WRITTEN APPROVAL BY OR ON BEHALF OF LEGATO SHALL BE CONSTRUED AS AN INFERENCE TO THE CONTRARY. IF YOU HAVE ORDERED THIS PRODUCT, LEGATO’S ACCEPTANCE IS EXPRE S SLY CONDITIONAL ON YOUR ASSENT TO THESE TERMS TO THE EXCLUSION OF ALL OTHER TER MS; IF THESE TERMS ARE CONSIDERED AN OFF ER BY LE GATO, ACCEPTANCE IS EXPRESSLY LIMITED TO THESE TERMS.

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Preface ......................................................................................................... 15.

Audience.......................................................................................................................... 15.

Product Documentation................................................................................................... 15.

Conventions.....................................................................................................................16.

Information and Services.... ...... ....... ...... ....... ...... ....... ...... ....... ...... ...... ............................. 17.

General Information .................................................................................................. 17.

Technical Support ..................................................................................................... 17.

Licensing and Registration........................................................................................ 18.

Customer Feedback ........................................................................................................ 18.

Chapter 1: Introduction............................................................................... 19.

What Is a Disaster? ......................................................................................................... 19.

Disaster Recovery Guide Overview................................................................................. 20.

Chapter 2: Preparing for a Disaster........................................................... 21.

Preparing for Disaster...................................................................................................... 21.

Gathering the Key Information......................................................................................... 22.

Hardware Information................................................................................................ 22.

Software Information.............................................................. ...... ....... ...... ....... ...... ... 23.

Chapter 3: UNIX Disaster Recovery........................................................... 25.

Disaster Recovery Procedures........................................................................................ 26.

Replacing a Hard Drive ................................................................................................... 27.

Prerequisites............................................................................................................. 27.

Replacing the Hard Drive.......................................................................................... 27.

Completing the Recovery Process............................................................................ 28.

Installing and Configuring the UNIX Operating System................................................... 28.

Legato NetWorker, Release 7.0 Disaster Recovery Guide

Contents

Prerequisites..............................................................................................................28.

How to Install and Configure the UNIX Operating System ........................................29.

Task 1: Install the Operating System..................................................................30.

Task 2: Configure the Operating System............................................................30.

Task 3: Configure the Devices and Test the Operating System .........................31.

Completing the Recovery Process ............................................................................32.

Recovering a NetWorker Server......................................................................................32.

Prerequisites..............................................................................................................32.

How to Recover a NetWorker Server........................................................................32.

Task 1: Install the NetWorker Server Software...................................................33.

Task 2: Configure NetWorker Device Resources ...............................................34.

Task 3: Locate the Server’s Bootstrap Save Set ID............................................34.

Task 4: Recover the NetWorker Server Bootstrap..............................................36.

Task 5: Rename the NetWorker Server Configuration Files...............................37.

Task 6: Recover All Client File Indexes ..............................................................38.

Task 7: Recover the Application and User Data .................................................39.

Task 8: Perform a Test Backup and Recovery ...................................................39.

Recovering a NetWorker Storage Node...........................................................................40.

Prerequisites..............................................................................................................40.

How to Recover a NetWorker Storage Node.............................................................40.

Task 1: Install the NetWorker Storage Node.......................................................41.

Task 2: Recover the Application and User Data .................................................41.

Task 3: Perform a Test Backup and Recovery ...................................................42.

Recovering a NetWorker Client........................................................................................43.

Prerequisites..............................................................................................................43.

How to Recover a NetWorker Client..........................................................................43.

Task 1: Install NetWorker Client..........................................................................43.

Task 2: Recover the Application and User Data .................................................44.

Task 3: Perform a Test Backup and Recovery ...................................................45.

Legato NetWorker, Release 7.0

Disaster Recovery Guide

Contents

Chapter 4: Windows Disaster Recovery ................................................... 47.

Disaster Recovery Summary Procedures ....................................................................... 48.

NetWorker Server Recovery Summary Procedure ................................................... 48.

NetWorker Client or Storage Node Recovery Summary Procedure......................... 50.

Disaster Recovery of Multiple Computers ....................................................................... 51.

Disaster Recovery of Clustered Computers.............................................................. 52.

Replacing a Hard Drive ................................................................................................... 52.

Performing Windows ASR Recovery............................................................................... 53.

OEM Recovery CD Limitations ................................................................................. 53.

ASR Recovery Requirements ................................................................................... 54.

Task 1: Perform an ASR Recovery of the NetWorker Client Computer.................... 54.

Task 2: Restore Components that Require Special Handling................................... 55.

Task 3: Verify the NetWorker Client Recovery.......................................................... 56.

Repairing a Windows NT 4.0 Operating System Installation........................................... 57.

Repairing Windows NT 4.0 ....................................................................................... 57.

Creating an ERD from the REPAIRDISK Save Set............................................ 57.

How to Use the NetWorker User Program to Create an ERD...................... 58.

How to Use the NetWorker recover Command to Create an ERD .............. 58.

How to Use the ERD to Repair the Windows NT 4.0 Installation ....................... 59.

Recovering a Windows Installation............................ ...... ....... ...... ...... ....... ...... ....... ...... ... 60.

Recovery Requirements............................................................................................ 60.

How to Recover the Windows Operating System ..................................................... 61.

Task 1: Install the Windows Operating System.................................................. 62.

Task 2: Configure the Devices and Test the Operating System......................... 65.

Recovering a NetWorker Server...................................................................................... 66.

NetWorker Server Recovery Requirements.............................................................. 66.

How to Recover a Windows 2000 NetWorker Server ............................................... 67.

Task 1: Install the NetWorker Server Software .................................................. 67.

Task 2: Configure the NetWorker Server ........................................................... 68.

Task 3: Locate the NetWorker Server Bootstrap Save Set ID............................ 70.

Legato NetWorker, Release 7.0 Disaster Recovery Guide

Contents

Task 4: Recover the NetWorker Server Bootstrap..............................................72.

Task 5: Rename the Resource Configuration Files ............................................74.

Task 6: Reset and Inventory the Autochanger....................................................74.

How to Reset and Inventory an Autochanger with Removable Storage

Disabled........................................................................................................74

How to Reset and Inventory an Autochanger with Removable

Storage Enabled.... ...... ............................................. ....... ...... ....... ...... ....... ...75

Task 7: Recover the NetWorker Server’s Client File Indexes.............................76.

Task 8: Recover the NetWorker Server Data......................................................78.

Task 9: Restore the Removable Storage Jukebox Configuration.......................80.

Task 10: Verify the NetWorker Server Recovery ................................................81.

Recovering a NetWorker Client or Storage Node ............................................................82.

Partial Recovery of a NetWorker Storage Node........................................................82.

Task 1: Satisfy the NetWorker Client or Storage Node Recovery Requirements......83.

Task 2: Reinstall the NetWorker Client or Storage Node Software...........................83.

Task 3: Recover the NetWorker Client or Storage Node Data..................................84.

Task 4: Verify the NetWorker Client or Storage Node Recovery...............................86.

Recovery of DHCP and WINS Databases.......................................................................87.

How to Recover a DHCP Database ..........................................................................88.

How to Recover a WINS Database ...........................................................................88.

Chapter 5: NetWare Disaster Recovery.....................................................89.

Replacing a Hard Drive....................................................................................................90.

Obtain the Hard Drive Information.............................................................................90.

Replace the Hard Drive .............................................................................................90.

Completing the Recovery Process ............................................................................91.

Recovering the NetWare Operating System....................................................................91.

Prerequisites ............... .................... ................... ............. ................... .................... ...91.

How to Recover the NetWare Operating System......................................................92.

Task 1: Install the Operating System..................................................................92.

Task 2: Configure the Operating System............................................................93.

Legato NetWorker, Release 7.0

Disaster Recovery Guide

Contents

Task 3: Test the Operating System and Configure Devices............................... 94.

Completing the Recovery Process............................................................................ 94.

Recovering a NetWare NetWorker Server ...................................................................... 94.

Prerequisites ............................................................................................................ 95.

How to Recover a NetWare NetWorker Server......................................................... 95.

Task 1: Install the NetWorker Software.............................................................. 96.

Task 2: Configure NetWorker Device and Client Resource ............................... 96.

Task 3: Locate the Server’s Bootstrap Save Set ID ........................................... 97.

Task 4: Recover the NetWorker Server Bootstrap ............................................. 97.

Task 5: Rename the NetWorker Server Configuration Files .............................. 99.

Task 6: Recover the NetWorker Server Data..................................................... 99.

Task 7: Restore NDS Data............................................................................... 100.

Task 8: Complete the Server Recovery............................................................ 101.

Recovering a Replicated NDS Partition......................................................................... 102.

How to Recover a NetWare 4.10 SYS Volume....................................................... 102.

Task 1: Recover the NetWare 4.10 SYS Volume............................................. 102.

Task 2: Restore the SMS Remote File System................................................ 104.

Task 3: Complete the Recovery of the NetWare 4.10 SYS Volume................. 105.

How to Recover a NetWare 4.11, NetWare 5.0, or IntraNetWare Server

SYS Volume............................................................................................................ 105

Task 1: Recover the NetWare SYS Volume..................................................... 106.

Task 2: Install the Operating Systems.............................................................. 107.

Task 3: Complete the NetWare SYS Volume Recovery................................... 108.

Chapter 6: Microsoft Cluster Disaster Recovery (Windows NT 4.0)..... 111.

Recovering One Node in a Cluster................................................................................ 111.

Task 1: Evict Node_B from the Cluster................................................................... 112.

Task 2: Reinstall Windows NT 4.0 and MSCS on Node_B..................................... 112.

Task 3: Reinstall the NetWorker Software.............................................................. 113.

Task 4: Recover the Data on Node_B .................................................................... 113.

Recovering a Cluster Shared Disk ......................................... ....................................... 113.

Legato NetWorker, Release 7.0 Disaster Recovery Guide

Contents

Task 1: Take the Dependent Resources Offline......................................................113.

Task 2: Replace the Hard Drive ..............................................................................114.

Task 3: Recover the Data to the Shared Disk .........................................................115.

Task 4: Configure the Cluster to Include the Shared Disk.......................................115.

Replacing the Quorum Disk and Recovering Its Data....................................................116.

About the Quorum Resource.... ....... ...... ....... ...... ....... ...... ...... ..................................116.

How to Replace the Quorum Disk and Recover Its Data ........................................117.

Recovering the MSCS Cluster Configuration.................................................................117.

Task 1: Recover the System State and Quorum Data ............................................118.

Task 2: Replace the Quorum Data with the Recovered Quorum Data....................118.

Task 3: Evict Node_B from the Cluster ...................................................................119.

Task 4: Install the Cluster Software and Patches on Node_B.................................119.

Performing a Cluster-Wide Recovery.............................................................................119.

Task 1: On Node_A, Install and Configure the Software.........................................120.

Task 2: On Node_B, Install and Configure the Software.........................................121.

Task 3: Install and Configure NetWorker.................................................................121.

Task 4: Perform a Disaster Recovery......................................................................122.

Task 5: Check and Reassign the Drive Assignments..............................................122.

Task 6: Recover the Data........................................................................................123.

Task 7: Check the Disk Signatures .........................................................................123.

Task 8: Join Node_B to the Cluster.........................................................................124.

Chapter 7: Microsoft Cluster Disaster Recovery

(Windows 2000 and .NET).........................................................................127

Prerequisites..................................................................................................................127.

Recovering a Failed Quorum Disk ............................ ....... ...... ...... ....... ...... ....... ..............128.

How to Recover a Failed Quorum Disk ...................................................................128.

Recovering One Cluster Node .......................................................................................129.

How to Recover One Cluster Node.........................................................................129.

Recovering Multiple Cluster Nodes................................................................................132.

How to Recover Multiple Cluster Nodes..................................................................132.

Legato NetWorker, Release 7.0

Disaster Recovery Guide

Contents

Chapter 8: Sun Cluster Disaster Recovery............................................. 135.

Prerequisites.................................................................................................................. 135.

Restoring a Single Cluster Node................................................................................... 135.

How to Restore a Single Cluster Node ................................................................... 136.

Restoring an Entire Cluster ........................................................................................... 136.

How to Restore an Entire Cluster............................................................................ 136.

Task 1: Replace the Damaged Hardware ........................................................ 137.

Task 2: Install the Software .............................................................................. 137.

Task 3: Recover the Data................................................................................. 138.

Chapter 9: HP TruCluster Disaster Recovery......................................... 139.

Prerequisites.................................................................................................................. 139.

Record Information.................................................................................................. 139.

Back Up the Cluster ................................................................................................ 140.

Restoring One or More Nodes in a Cluster ................................................................... 140.

How to Restore One or More Nodes in a Cluster.................................................... 141.

Task 1: Replace the Damaged Hardware ........................................................ 141.

Task 2: Verify Hardware Mappings .................................................................. 141.

Task 3: Partition the Down Node’s Boot Drive ................................................. 141.

Task 4: Update the Cluster Configuration ........................................................ 141.

Task 5: Recover the Node-Specific Data ......................................................... 142.

Restoring an Entire Cluster ........................................................................................... 143.

How to Restore an Entire Cluster............................................................................ 143.

Task 1: Replace the Damaged Hardware ........................................................ 144.

Task 2: Verify Hardware Mappings .................................................................. 144.

Task 3: Install and Configure the Cluster Software .......................................... 144.

Task 4: Install the NetWorker Software............................................................ 145.

Task 5: Configure NetWorker Device and Autochanger Resources ................ 146.

Task 6: Locate the Server’s Bootstrap Save Set ID ......................................... 146.

Task 7: Recover the Server’s Bootstrap........................................................... 147.

Legato NetWorker, Release 7.0 Disaster Recovery Guide

Contents

Task 8: Locate the Server’s Client File Index Save Set IDs..............................148.

Task 9: Recover the Server’s Client File Index.................................................149.

Task 10: Re-create the Cluster .........................................................................150.

Task 11: Recover the Cluster Data...................................................................150.

Chapter 10: HP-UX Cluster Disaster Recovery.......................................153.

Recovering a Single Cluster Node.................................................................................153.

How to Recover a Single Cluster Node...................................................................153.

Performing a Cluster-Wide Recovery.............................................................................154.

How to Perform a Cluster-Wide Recovery...............................................................154.

Task1: Install the Software.............. ....... ...... ............................................. ....... .154.

Task 2: Restore the Cluster Database..............................................................154.

Task 3: Start the Cluster ...................................................................................155.

Task 4: Restore the Data ..................................................................................156.

Chapter 11: Legato AAM for AIX, HP-UX, and Linux

Disaster Recovery......................................................................................157.

Recovering a Single Cluster Node.................................................................................157.

How to Recover a Single Cluster Node...................................................................157.

Performing a Cluster-Wide Recovery.............................................................................159.

How to Perform a Cluster-Wide Recovery...............................................................159.

Task 1: Install the Software...............................................................................159.

Task 2: Restore the Cluster ..............................................................................160.

Task 3: Configure NetWorker Software as a Highly Available Application .......161.

Task 4: Restore the Data ..................................................................................162.

On the Primary Node..................................................................................162.

On Each of Remaining Node in the Cluster................................................162.

Task 5: Start the Cluster Software on Each Node ............................................163.

Renaming the Resource Directory.................................................................................164.

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Contents

Chapter 12: HACMP for AIX Disaster Recovery..................................... 165.

Recovering a Single Node............................................................................................. 165.

How to Recover a Single Node............................................................................... 166.

Recovering an Entire Cluster......................................................................................... 166.

How to Perform a Cluster-Wide Recovery.............................................................. 166.

Task 1: Install the Software .............................................................................. 166.

Task 2: Restore the Cluster Database ............................................................. 166.

Task 3: Start the Cluster................................................................................... 167.

Task 4: Restore the Data.................................................................................. 167.

Glossary..................................................................................................... 169.

Index........................................................................................................... 185.

Legato NetWorker, Release 7.0 Disaster Recovery Guide

Contents

Legato NetWorker, Release 7.0

Disaster Recovery Guide

Audience

Preface

This guide contains information on how to prepare for a disaster before one strikes and how to recover from a disas t er.

Using the Legato NetWorker disaster recovery pro gram. The next s tep is deciding h ow to r ecover data af ter a disaster.

The information in this guide is intended for the following audiences:

• System administrators who perform backup and recovery procedures,

and maintain the safety of the data located over a network

• Managers who want to learn how to implement a disaster recovery

program

• Users who are responsible for implementing disaster recovery plans and

procedures

software to back up data is the first step in a

Product Documentation

Legato offers an extensive archive of product documentation at its web site www.legato.com. Most of the documents are in Adobe Acrobat Portable Document Format (PDF), and can be viewed by downloading and installing the Adobe Acrobat Reader. The Reader is available in the /viewers/acroread directory on the Legato Documentation Suite CD-ROM, or directly from Adobe at www.adobe.com. To install and use the Reader on the preferred platform, refer to the instr uctions in the CD-ROM’s /viewers/acroread/readme.txt file or at the Adobe web site.

Legato NetWorker, Release 7.0 Disaster Recovery Guide

Conventions

This document uses the following typographic conventions and symbols to

make information easier to access and understa nd.

Convention Indicates Example

boldface Names of line commands,

daemons, options, programs, or scripts

italic in text Pathnames, filenames,

computer na me s , n e w t e rms defined in the Glossary or within the chapter, or emphasized words

italic in command line

A variable that must be provided in the command line

fixed-width Examples and information

displayed on the screen

fixed-width, boldface

Commands and options that must be typed exactly as shown

Menu_Name> Command

A path or an order to follow for making selections in the GUI

Important: Information that must be

read and followed to ensure successful backup and recover y of data

The nsradmin command starts the command line version of the administration program.

Displayed messages are also written to /nsr/logs/daemon.log.

nwadmin -s server_name

media waiting : recover wait ing for 8mm 5GB tape volume name

nsr_shutdown -a

Volume>Change Mode>Ap pendable

Important: Use the no_verify option with extreme caution.

Legato NetWorker, Release 7.0

Disaster Recovery Guide

Information and Services

Legato offers a variety of methods, including electronic, telephone, and fax support to obtain company, product, and technical information.

General Information

The Legato web site provides most of the information that customers might need. Technical bulletins and binary patches are also accessible on the Legato FTP site. For specific sales or training needs, e-mail or call Legato.

Legato Service or Resource

www.legato.com Yes Yes Yes Yes

Technical Bulletins

Binary Patches

Company & Product Information

Preface

Training Programs

ftp.legato.com

(log in as anonymous) Legato Sales

(650) 210-7000 (option 1)

sales@legato.com

Legato Education Services (650) 842-9357

training@legato.com

Technical Support

The Support section of the Legato web site provides contact information, software patches, technical documentation, and information about available support programs.

• Customers with an active support agreement have access to Legato's

integrated product knowledge base. Help with Legato software issues is

also available through Legato Technical Support.

• Customers without an active support agreement can co ntact Support

Sales and Renewal to pur chas e annual Soft war e Update Subs criptio ns, or

Legato Technical Support services for per-update/per-incident support.

Yes Yes

Yes

Legato NetWorker, Release 7.0 Disaster Recovery Guide

Licensing and Registration

T o license and register Legato products, go to the Legato licensing web site. To

change contact information, transfer licenses, or ask questions about licensing,

contact Legato using one of the following methods.

Licensing and Registration Contact

Legato licensing web site http://license.legato.com Telephone number (650) 812 6000 (option 3, option 2)

Fax number (650) 745-1477

E-mail licensing@legato.com

a. Contact informat ion for Americas, Asia, an d Pacific.

b. Contact information for Europe, Middle East, and Africa.

Customer Feedback

+31 23 554 8881

+31 23 554 8808

licensingemea@legato.com

Legato welcomes comments and suggestions abo ut software features, the

installation procedure, and documentation. Please send any suggestions and

comments to feedback@legato.com. Legato confirms receipt of all e-mail

correspondence. Although Legato cannot respond personally to every request,

all comments and suggestions are considered during product design.

Help improve Legato documentation by completing a brief survey. Visit the

Legato web site at www.legato.com, navigate to the documentation page, and

click on the link to the survey.

Legato NetWorker, Release 7.0

Disaster Recovery Guide

The Legato NetWorker Disaster Recovery Guide, Release 7.0 provides step-by-step instructions for recovering from a disaster on supported NetWorker 7.x client and server platforms.

This chapter includes the following sections:

• “What Is a Disaster?” on page 19

• “Disaster Recovery Guide Overview” on page 20

What Is a Disaster?

For the purpose of this guide, a disaster is any situation in which the day-to-day access to data (for example, working files, software programs, or system files) is disrupted. A disaster can also damage network components, such as data, devices, hardware, media, and software.

A disaster can result from any of the following:

Chapter 1: Introduction

• Computer viruses that can corrupt data

• Hardware and software failures

• Infrastructure interruptions, inconsisten c ie s, or loss of services, such as

communication or network con nections The degree of loss during a disaster can range from one or more files to an

entire computer system. The severity of the disaster determines the procedures necessary to recover data.

Note: The term autochanger refers to a variety of backup devices: autoloader, carousel, datawheel, jukebox, library, and near-line storage.

Legato NetWorker, Release 7.0 Disaster Recovery Guide

Disaster Recovery Guide Overview

The guide includes the following topics to help you prepare for and perform a

recovery of NetWorker servers, clients, and storage nodes:

• “Chapter 2: Preparing for a Disaster” on page 21

• “Chapter 3: UNIX Disaster Recovery” on page 25

• “Chapter 4: Windows Disaster Recovery” on page 47

• “Chapter 5: NetWare Disaster Recovery” on page 89

• “Chapter 6: Microsoft Cluster Disaster Recovery (Windows NT 4.0)” on

page 111

• “Chapter 7: Microsoft Cluster Disaster Recovery (Windows 2000 and

.NET)” on page 127

• “Chapter 8: Sun Cluster Disaster Recovery” on page 135

• “Chapter 9: HP TruCluster Disaster Recovery” on page 139

• “Chapter 10: H P-UX Cluster Disaster Recovery” on page 153

• “Chapter 11: Legato AAM for AIX, HP-UX, and Linux Disaster

Recovery” on page 157

• “Chapter 12: HACMP for AIX Disaster Recovery” on page 165

Legato NetWorker, Release 7.0

Disaster Recovery Guide

Chapter 2: Preparing for a Disaster

This chapter contains informat ion on preparing f or a disaster. This chapter includes the following sections:

• “Preparing for Disaster ” on page 21

• “Gathering the Key Information” on page 22 If you are viewing the online version of this guide, print out a hard copy and

store it in a safe location.

Preparing for Disaste r

You should back up important data on a scheduled basis. The more time and effort you invest in incorporating, maintaining, and testing a backup solution, the better prepared you are in the event of a disaster.

Ensure that servers are backed up regularly using a backup group. Otherwise, a bootstrap is not saved (backups performed using the command line or the NetWorker User program do not save the NetWorker server bootstrap). You should also use a local backup device on the server to back up the server’s bootstrap.

Always perform a scheduled backup of the NetWorker server after upgrading to a new rele ase of NetW or ker software . This ensures th at an upgraded version of the bootstrap is saved.

The bootstrap information can be printed from the savegrp.log file, which is located in the nsr directory. For instructions on how to configure the NetW o rker software to send bootstrap information dir ectly to a printer or to a specified e-mail address, refer to the appropriate Administrator’s Guide. If the bootstrap is backed up to a pool other than the preconfigured pools, save the name of the pool along with the bootstrap.

Legato NetWorker, Release 7.0 Disaster Recovery Guide

Gathering the Key Information

To recover from network-related disasters, you must have access to key information related to each computer that needs protection. Maintain a copy of this information on-site for easy access by th ose assigned to perform disaster recovery.

Important: Having the correct information on hand in case a disaster occurs is a key element in recovering from a disaster as quickly as possible.

Enact strict guidelines regarding the access, maintenance, and usage of this information, and maintai n the information in an on-site location that is the most resistant to disaster.

Gathering the Key Information

Maintain accurate records for each hardware, software, network, device, and media component.

Hardware Information

Maintain the following up-to-date information regarding computer hardware:

• Filesystem configuration

• Fully qualified domain names, IP addresses, and hostnames

• For Domain Name System (DNS) clients, ma intain the DNS host’s internet address and hostname

• Hard drive configuration

•Media device names

• Hardware vendor contact information and contract number

• Configuration information for each piece of hardware, both active and inactive, within the organization or organizational site

To obtain hardware information for the following operating systems:

• NetWare, see “Obtain the Hard Drive Information” on page 90

• UNIX, see “Prerequisites” on page 27

• Windows, see “Replacing a Hard Drive” on page 52

Legato NetWorker, Release 7.0

Disaster Recovery Guide

Software Information

Maintain the following up-to-date information regarding computer software:

• Copies of the original operating system media and patches (and where they are located)

• Software enabler and authorization codes

• Software vendor contact information and contract number

• The operating system version and patch e s installed

• Operating system configuration

• Emergency media that can be used to restor e a co mputer in the event of a disaster

• NetWorker bootstrap information for each NetWorker server

• Kernel configuration and location

• Device drivers

• A list of any Windows volume mount points.

Table 1 lists where to obtain software information for a specific operating

system.

Chapter 2: Preparing for a Disaster

Table 1. Operating System Information (Part 1 of 2)

Platform Recovery/Repair Prerequisite Information

UNIX Recovering the UNIX

Win dows Windows XP Pro and W indows

Legato NetWorker, Release 7.0 Disaster Recovery Guide

operating system

Recovering a UNIX NetW orker server

Recovering a UNIX NetW orker storage node

Recovering a UNIX NetW orker client

.NET: Automated System Recovery (ASR) requirements

“Installing and Configuring the UNIX Operating System” on page 28

“Recovering a NetWorker Server” on page 32

“Recovering a NetWorker Storage Node” on page 40

“Recovering a NetWorker Client” on page 43

“ASR Recovery Requirements” on page 54

Software Information

Table 1. Operating System Information (Part 2 of 2)

Platform Recovery/Repair Prerequisite Information

Windows NT 4.0: Repairing a Windows NT 4.0 operating system installation

Windows 2000: Recovering a Windows installation

Windows .NET and Windows 2000: NetWorker server recovery requirements

Windows (all versions): NetWorker client or storage node recovery requirements

Windows (all versions): Dynamic Host Conf iguration Protocol (DHCP) and Windows Internet Naming Service (WINS) database recovery

NetWare Recovering the NetWare

operating system

“Repairing a Windows NT

4.0 Operating System Installation” on page 57

“Recovering a Windows Installation” on page 60

“NetWo rker Server Recovery Requiremen ts” on page 66

“Recovering a NetWorker Client or Storage Node” on page 82

“Recovery of DHCP and WINS Databases” on page 87

“Recovering the NetWare Operating System” on page 91

Recovering a NetWare NetWorker server

“Recovering a NetWare NetWorker Server” on page 94

Legato NetWorker, Release 7.0

Disaster Recovery Guide

Chapter 3: UNIX Disaster Recovery

This chapter explains how to r ecover fr om a disaster on a UNIX server, client, or storage node host compu t e r running NetWorker 7.x software.

This chapter includes the following sections:

• “Disaster Recovery Procedures” on page 26

• “Replacing a Hard Drive” on page 27

• “Installing and Configuring the UNIX Operating System” on page 28

• “Recovering a NetWorker Server” on page 32

• “Recovering a NetWorker Storage Node” on page 40

• “Recovering a NetWorker Client” on page 43

Legato NetWorker, Release 7.0 Disaster Recovery Guide

Disaster Recovery Procedures

Disaster Recovery Procedu res

Table 2 on page 26 lists the disaster recovery procedures that you may have to

perform depending on the damage caused by the disaster. Complete each procedure, as necessary, in the order listed in this table.

Table 2. UNIX Disaster Recovery Procedures

If you are recovering... See...

A hard drive “Replacing a Hard Drive” on page 27 The operating system “Installing and Configuring the U NIX

Operating System” on page 28

A NetWorker server “Recovering a NetWorker Server” on

page 32

A NetWorker storage node “Recovering a NetWorker Storage Node”

on page 40

A NetW orker client “Recovering a NetWorker Client” on

page 43

Data* on any computer Refer to the appropriate Administrator’s

Guide

Data* on a computer with Legato Celestra Power

Refer to the appropriate Legato Celestra

Administrator’s Guide

installed

* Refers to data, such as application and us er data, that i s not part of the core NetWorker software or operating system programs.

Legato NetWorker, Release 7.0

Disaster Recovery Guide

Replacing a Hard Drive

The following sections provide important information to be aware of when replacing a hard drive as part of a disaster recovery:

• “Prerequisites” on page 27

• “Replacing the Hard Drive” on page 27

• “Completing the Recovery Process” on page 28

Prerequisites

To help ensure that you are prepared to replace and reconfigure a hard drive, maintain a current record of the system information. Obtain the following information using the appropriate operatin g system commands:

• Size of the drive

• Filesystem volume information

• Volume label assigned to each disk partition

• How the disk is partitioned

• How the disk is loaded

• The size of the disk

• Each logical volume (size and label)

•Each filesystem

Chapter 3: UNIX Disaster Recovery

Note: Though it does not affect NetWorker operation, you could also note any use of mirroring, Redundant Array of Independent Disk (RAID), striping, compression, or volume sets.

Replacing the Hard Drive

If one or more hard drives fail, refer to the appropriate operating system documentation and hard drive vendor documentation for detailed instructions on how to replace the hard drives.

Important: To ensure that you can recover all of the drive’s data, install a new drive that is the same size or larger than the original drive.

Legato NetWorker, Release 7.0 Disaster Recovery Guide

Completing the Recovery Process

To complete the recovery process after replacing the hard drive, recover the following:

1. The UNIX operating system, if necessary. For information, see “Installing

and Configuring the UNIX Operating System” on page 28.

2. The NetWorker software corresponding to the type of NetWorker computer you are recovering. For more information, see:

• “Recovering a NetWorker Server” on page 32.

• “Recovering a NetWorker Storage Node” on page 40.

• “Recovering a NetWorker Client” on page 43. Each of the preceding procedures describe how to recover the NetWorker

software as well as the computer’s application and user d ata.

Installing and Configuring the UNIX Operating System

The following sections provide informatio n on reinstalling and configuring the UNIX operating system:

Prerequisites

• “Prerequisites” on page 28

• “How to Install and Configure the UNIX Operating System” on page 29

• “Completing the Recovery Process” on page 32

T o recover the operating system, record the following information and ensure that it is current:

• Version and patch level of the operating system

• Installation path of the operating system

• TCP/IP properties: – Adapter type –IP address – Default gateway –Subnet mask –DNS server

Legato NetWorker, Release 7.0

Disaster Recovery Guide

Chapter 3: UNIX Disaster Recovery

• Computer properties: –Hostname – DNS domain name – Superuser password

• Device and SCSI drivers

• Boot files required for booting the kernel. For example: – /unix – /boot – /etc/default/boot – /stand/vmunix

Important: To determine which boot files should not be overwritten during a recovery refer to the appropriate operating system documentation.

How to Install and Configure the UNIX Operating System

When recovering a UNIX operation system, you must reinstall the same version of UNIX and any patches that were in use prior to the disaster. Then configure only those features that enable the computer to communicate over the network. You can recover the remaining operating system configuration settings after reinstalling the NetWorker software.

You can recover the UNIX operating system back to the original computer or to a different computer.

To recover the operating system, complete the following tasks:

• “Task 1: Install the Operating System” on page 30

• “Task 2: Configure the Operating System” on page 30

• “Task 3: Configure the Devices and Test the Operating System” on

page 31

Important: Do not install the operating system from a UNIX X-Windows session. Instead, recover the operating system in single-user mode from the system console.

Legato NetWorker, Release 7.0 Disaster Recovery Guide

Prerequisites

Task 1: Install the Operating System

To install the operating system:

1. Instal l the same version and patch level of the UNIX operating system. Specify the same installation locations that were used in the predisaster installation of the operating system . For installation information, refer to the appropriate UNIX documentation.

If you want to upgrade the operating system, recover the predisaster version of the operating system before performing any upgrades.

2. Re-create all of the filesystems that were previously on the computer. The filesystems must be:

• The same filesystem type.

• At least the same partition size as the original to hold all of the data

that was previously backed up.

At a minimum, configure the root volume group and kernel parameters, such as asynchronous I/O. If the resources are available, reconstruct nonroot volume group filesystems and logica l volumes.

Task 2: Configure the Operating System

To configure the operating system:

1. Configure the network exactly as it was before the disaster. If you do not, the NetWorker software will treat the computer as a new computer. If the computer has a different host ID, you must reregister the NetWor ker software. For information on registering the NetWorker software, refer to the appropriate Legato NetWorker Installation Guide.

2. If you are recovering the operating system to a differ ent computer, assign the same hostname to the new computer. Otherwise, you will not be able to recover the NetWorker inde xes associated with the original computer.

3. Configure the date and time as they were before, including the time zone.

4. Install any additional UNIX components or services before recovering the computer’s data.

5. Reboot the computer.

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Disaster Recovery Guide

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