Legato Networker
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®
Legato NetWorker
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,
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ServeRAID, Sequent, Symmetry, Tivoli , / IBM Corporation
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UNIX / X/Open Company Ltd
Access Logix, Celerra, CLARiiON, EMC, EMC2, MirrorView , MOSAI C:2 000 , Navi s phere, SnapView, SRDF, Symmetrix,
a
TimeFi nd er / EMC Corporation
Date ONTAP, NetApp, NetCache, Network Appliance, SnapMirror, SnapRestore / Network Appli a nce, Inc.
DLTtape / Quantum Corporation
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SPARC / SPARC International, Inc.
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REELbackup, StorageTek / Storage Technology Corporation
b
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.
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Contents
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.
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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.
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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.
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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.
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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.
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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.
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.
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.
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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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Disaster Recovery Guide
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.
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Contents
14
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
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15
Conventions
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.
16
Legato NetWorker, Release 7.0
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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
Yes
Legato NetWorker, Release 7.0
Disaster Recovery Guide
17
Licensing and Registration
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
b
a
b
a
licensingemea@legato.com
a
b
18
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.
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Disaster Recovery Guide Overview
Disaster Recovery Guide Overview
1
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
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Legato NetWorker, Release 7.0
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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.
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2
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
22
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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
2
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
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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
23
Software Information
Table 1. Operating System Information (Part 2 of 2)
Platform Recovery/Repair Prerequisite Information
2
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
24
Recovering a NetWare
NetWorker server
“Recovering a NetWare
NetWorker Server” on page
94
Legato NetWorker, Release 7.0
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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
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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
3
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.
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Legato NetWorker, Release 7.0
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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
3
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.
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3
Completing the Recovery Process
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
28
• “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
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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.
3
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3
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
30
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.
Legato NetWorker, Release 7.0
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