HP | Legato Networker | User's Manual | HP Legato Networker User's Manual

Legato NetWorker
®
Module for EMC CLARiiON for Oracle
®
Legato NetWorker®
®
Administrator’sRelease
Guide
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
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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.
10
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
11
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.
12
Legato NetWorker, Release 7.0
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.
Legato NetWorker, Release 7.0
Disaster Recovery Guide
13
Contents
14
Legato NetWorker, Release 7.0
Disaster Recovery Guide
Preface
This guide contains information on how to prepare for a disaster before one
strikes and how to recover from a disaster.
Using the Legato NetWorker® software to back up data is the first step in a
disaster recovery program. The next step is deciding how to recover data after
a disaster.
Audience
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
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 instructions in the CD-ROM’s /viewers/acroread/readme.txt
file or at the Adobe web site.
Legato NetWorker, Release 7.0
Disaster Recovery Guide
15
Conventions
Conventions
This document uses the following typographic conventions and symbols to
make information easier to access and understand.
Convention
Indicates
Example
boldface
Names of line commands,
daemons, options,
programs, or scripts
The nsradmin command starts the
command line version of the administration
program.
italic in text
Displayed messages are also written to
Pathnames, filenames,
computer names, new terms /nsr/logs/daemon.log.
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
nwadmin -s server_name
fixed-width
Examples and information
displayed on the screen
media waiting: recover waiting for
8mm 5GB tape volume name
fixed-width, Commands and options that nsr_shutdown -a
boldface
must be typed exactly as
shown
Menu_Name>
Command
A path or an order to follow Volume>Change Mode>Appendable
for making selections in the
GUI
Important:
Information that must be
read and followed to ensure
successful backup and
recovery of data
16
Important: Use the no_verify option with
extreme caution.
Legato NetWorker, Release 7.0
Disaster Recovery Guide
Preface
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
Company &
Technical Binary Product
Training
Bulletins Patches Information Programs
www.legato.com
Yes
Yes
ftp.legato.com
(log in as anonymous)
Yes
Yes
Legato Sales
(650) 210-7000 (option 1)
sales@legato.com
Legato Education Services
(650) 842-9357
training@legato.com
Yes
Yes
Yes
Yes
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 contact Support
Sales and Renewal to purchase annual Software Update Subscriptions, or
Legato Technical Support services for per-update/per-incident support.
Legato NetWorker, Release 7.0
Disaster Recovery Guide
17
Licensing and Registration
Licensing and Registration
To 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)a
+31 23 554 8881b
Fax number
(650) 745-1477a
+31 23 554 8808b
E-mail
licensing@legato.coma
licensingemea@legato.comb
a. Contact information for Americas, Asia, and Pacific.
b. Contact information for Europe, Middle East, and Africa.
Customer Feedback
Legato welcomes comments and suggestions about 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.
18
Legato NetWorker, Release 7.0
Disaster Recovery Guide
Chapter 1: Introduction
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:
•
Computer viruses that can corrupt data
•
Hardware and software failures
•
Infrastructure interruptions, inconsistencies, or loss of services, such as
communication or network connections
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
19
Disaster Recovery Guide Overview
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:
1
20
•
“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: HP-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 information on preparing for 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 Disaster
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 release of NetWorker software. This ensures that 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
NetWorker software to send bootstrap information directly 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
21
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 those 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.
2
Enact strict guidelines regarding the access, maintenance, and usage of this
information, and maintain 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, maintain 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:
22
•
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
Chapter 2: Preparing for a Disaster
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 patches installed
•
Operating system configuration
•
Emergency media that can be used to restore a computer 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.
2
Table 1 lists where to obtain software information for a specific operating
system.
Table 1. Operating System Information (Part 1 of 2)
Platform
Recovery/Repair
Prerequisite Information
UNIX
Recovering the UNIX
operating system
“Installing and Configuring
the UNIX Operating
System” on page 28
Recovering a UNIX NetWorker “Recovering a NetWorker
server
Server” on page 32
Recovering a UNIX NetWorker “Recovering a NetWorker
storage node
Storage Node” on page 40
Recovering a UNIX NetWorker “Recovering a NetWorker
client
Client” on page 43
Windows
Legato NetWorker, Release 7.0
Disaster Recovery Guide
Windows XP Pro and Windows “ASR Recovery
Requirements” on page 54
.NET:
Automated System Recovery
(ASR) requirements
23
Software Information
Table 1. Operating System Information (Part 2 of 2)
Platform
2
Recovery/Repair
Prerequisite Information
Windows NT 4.0:
Repairing a Windows NT 4.0
operating system installation
“Repairing a Windows NT
4.0 Operating System
Installation” on page 57
Windows 2000:
Recovering a Windows
installation
“Recovering a Windows
Installation” on page 60
Windows .NET and Windows
2000:
NetWorker server recovery
requirements
“NetWorker Server
Recovery Requirements” on
page 66
Windows (all versions):
NetWorker client or storage
node recovery requirements
“Recovering a NetWorker
Client or Storage Node” on
page 82
“Recovery of DHCP and
Windows (all versions):
WINS Databases” on page
Dynamic Host Configuration
Protocol (DHCP) and Windows 87
Internet Naming Service
(WINS) database recovery
NetWare
24
Recovering the NetWare
operating system
“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 recover from a disaster on a UNIX server, client,
or storage node host computer 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
25
Disaster Recovery Procedures
Disaster Recovery Procedures
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
3
If you are recovering...
See...
A hard drive
“Replacing a Hard Drive” on page 27
The operating system
“Installing and Configuring the UNIX
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 NetWorker 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
installed
Refer to the appropriate Legato Celestra®
Administrator’s Guide
* Refers to data, such as application and user data, that is not part of the core NetWorker software
or operating system programs.
26
Legato NetWorker, Release 7.0
Disaster Recovery Guide
Chapter 3: UNIX Disaster Recovery
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 operating 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
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.
Legato NetWorker, Release 7.0
Disaster Recovery Guide
27
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 data.
3
Installing and Configuring the UNIX Operating System
The following sections provide information on reinstalling and configuring
the UNIX operating system:
•
“Prerequisites” on page 28
•
“How to Install and Configure the UNIX Operating System” on page 29
•
“Completing the Recovery Process” on page 32
Prerequisites
To recover the operating system, record the following information and ensure
that it is current:
28
•
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
29
3
Prerequisites
Task 1: Install the Operating System
To install the operating system:
1. Install 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:
3
•
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 logical 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 NetWorker
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 different computer, assign
the same hostname to the new computer. Otherwise, you will not be able to
recover the NetWorker indexes 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.
30
Legato NetWorker, Release 7.0
Disaster Recovery Guide
Chapter 3: UNIX Disaster Recovery
Task 3: Configure the Devices and Test the Operating System
To configure the devices and test the operating system:
1. Configure any devices the NetWorker software requires, for example SCSI
pass-through devices for autochangers. For information about configuring
devices, refer to the Legato NetWorker Administrator’s Guide, UNIX Version.
2. Test that the:
•
Name to Address resolution and TCP/IP are functioning properly.
To test these, run ping on the server to reach a client, and then run
ping on a client to reach the server.
•
Operating system is functioning properly.
•
Tape drive is functioning properly. To test this, run the mt
commands.
•
Operating system recognizes devices. If the operating system is not
recognizing devices, you might need to:
–
Load the SCSI driver.
–
Install the device driver software.
–
Modify the device configuration files to enable the computer to
communicate with the device during recovery. For details on
modifying the device configuration files, refer to the Legato
NetWorker Administrator’s Guide.
3. Ensure that the block size mode for tape devices used with NetWorker is
set to variable. Otherwise, data recovery may fail. The procedure for setting
the device block size varies depending on your operating system. For
example, to set the tape device block size on an AIX system:
a. Open the IBM System Management Interface Tool (SMIT) and select
the Devices box in the System Management section near the bottom
of the SMIT window.
b. Select Tape Drive.
c. Select Change/Show Characteristics of a Tape Drive. This brings up a
list of tape drives.
d. Select a tape drive from the list. The attributes of the selected tape
drive will display.
e. Ensure that the BLOCK size (0=variable length) (Num.) is set to 0.
f. Repeat step d and step e for each tape drive the NetWorker software
uses.
For information about setting the tape device block size on the operating
system, refer to the operating system documentation.
Legato NetWorker, Release 7.0
Disaster Recovery Guide
31
3
Completing the Recovery Process
Completing the Recovery Process
To complete the recovery process after installing and configuring the
operating system, use the following procedures, depending on the type of
NetWorker computer you are recovering. These procedures describe how to
recover the NetWorker software as well as the computer’s application and
user data:
•
“Recovering a NetWorker Server” on page 32.
•
“Recovering a NetWorker Storage Node” on page 40.
•
“Recovering a NetWorker Client” on page 43.
Recovering a NetWorker Server
3
The following sections provide information on recovering a NetWorker
server:
•
“Prerequisites” on page 32
•
“How to Recover a NetWorker Server” on page 32
Prerequisites
Before you can recover the NetWorker server, be sure that the UNIX operating
system is installed on the computer. For information about reinstalling the
UNIX operating system, see “Installing and Configuring the UNIX Operating
System” on page 28.
To recover the NetWorker server, you need the following:
•
Version and patch level of the NetWorker server software.
•
Original directory location to which the NetWorker server was installed.
•
NetWorker server installation media.
•
Backup or clone volumes containing the NetWorker server bootstrap and
indexes.
•
Name of any links to NetWorker directories. An example of a typical link
from a NetWorker directory to a user directory is /nsr to /usr/nsr.
How to Recover a NetWorker Server
This section describes how to recover the NetWorker server back to the
original computer.
32
Legato NetWorker, Release 7.0
Disaster Recovery Guide
Chapter 3: UNIX Disaster Recovery
Important: If the NetWorker server was also a Legato License Manager server,
the License Manager lictype.res file is not restored when the server is restored.
This is because the License Manager files and directories are not considered
part of the NetWorker server. After recovering the NetWorker server, you
must explicitly recover the License Manager as a client of the NetWorker
server.
To recover a NetWorker server, complete the following tasks:
•
“Task 1: Install the NetWorker Server Software” on page 33
•
“Task 2: Configure NetWorker Device Resources” on page 34
•
“Task 3: Locate the Server’s Bootstrap Save Set ID” on page 34
•
“Task 4: Recover the NetWorker Server Bootstrap” on page 36
•
“Task 5: Rename the NetWorker Server Configuration Files” on page 37
•
“Task 6: Recover All Client File Indexes” on page 38
•
“Task 7: Recover the Application and User Data” on page 39
•
“Task 8: Perform a Test Backup and Recovery” on page 39
3
Task 1: Install the NetWorker Server Software
To install the NetWorker server software:
1. Install the same version of the NetWorker server software into its original
location. When you install the NetWorker server software, the NetWorker
client is also installed. For installation instructions, refer to the appropriate
Legato NetWorker Installation Guide.
Note: If you want to upgrade the NetWorker server, first recover the
server to its original state, then perform the upgrade.
2. Install any NetWorker patches that were installed prior to the disaster.
3. Re-create any links to the NetWorker directories such as the directories
containing NetWorker index and configuration files.
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Prerequisites
To re-create links to NetWorker directories:
a. Stop the NetWorker daemons by entering the nsr_shutdown
command at the command line:
# nsr_shutdown -a
b. Move the files to their original location.
c. Create the links from the /nsr directory to the original location.
d. Restart the NetWorker server by first entering the nsrexecd
command and then entering the nsrd command, for example:
# nsrexecd
# nsrd
Note: You can also restart the NetWorker server by running the
NetWorker startup script for the appropriate platform.
3
Task 2: Configure NetWorker Device Resources
To configure the NetWorker software:
•
Configure the device resources.
–
If you want to recover data using a stand-alone device, ensure that a
resource for the stand-alone device exists (this is defined in the
/nsr/res directory). If a resource for the stand-alone device does not
exist, create it using the NetWorker Administrator program.
–
If you want to recover data using an autochanger, ensure that an
autochanger resource exists (this is defined in the /nsr/res directory).
If the autochanger resource does not exist, create it using the jbconfig
command. For information about using the jbconfig command, refer
to the Legato NetWorker Administrator’s Guide.
Reset the autochanger using the nsrjb -vHE command. This
command resets the autochanger, ejects backup volumes, reinitializes
the element status, and checks each slot for a volume.
If the autochanger does not support the -E option, initialize the
element status using sjiielm (on Linux, use ielem).
Inventory the autochanger using the nsrjb -I command. This helps
you determine whether the volumes required to recover the
bootstrap are located inside the autochanger.
Task 3: Locate the Server’s Bootstrap Save Set ID
The bootstrap contains the media database, the resource database, and the
server index.
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Important: If you routinely move NetWorker backup media to an offsite
location for safekeeping, and a subsequent file recover operation generates a
mount request, the recover operation waits until an operator mounts the
request media. To avoid delays when recovering files, use the mminfo -mv
command to list the media that is associated with the file you want to recover
and to retrieve the media from the offsite storage before starting the recover.
To locate the save set ID of the most recent bootstrap (if you do not already
have this information):
1. Insert the most recent media or clone volumes used for scheduled backups
into the appropriate device.
2. At the command line, switch to the directory where the NetWorker
binaries and executables are located.
3. If you are using an autochanger, insert the first volume of the bootstrap
save set into the first drive of the autochanger using the following
command:
nsrjb -lnv -S slot -f device_name
where:
–
slot is the slot where the first volume is located.
–
device_name is the pathname for the first drive. You can obtain the
device_name using the inquire command.
4. Use the scanner -B command to determine the save set ID of the most
recent bootstrap on the media. For example:
Solaris:
scanner -B /dev/rmt/0hbn
Linux:
scanner -B /dev/nst0
If you do not locate the save set ID of the most recent bootstrap on the most
recent media, run the scanner -B command on preceding media to locate
the save set ID of the most recent bootstrap.
5. Record both the bootstrap save set ID and the volume label from the
output.
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3
Prerequisites
Task 4: Recover the NetWorker Server Bootstrap
You can use the mmrecov command to recover the NetWorker server
bootstrap.
Note: In NetWorker release 6.0 and later, the mmrecov command is only used
to recover the NetWorker server’s media database and resource database; the
nsrck command is used to recover the server’s client file indexes.
To recover the NetWorker server bootstrap:
1. Use the mmrecov command to recover the NetWorker server’s bootstrap
(media database and resource database). For example:
mmrecov
Output similar to the following appears:
mmrecov: Using madrid.spain.com as server
3
Important: The mmrecov command overwrites the server’s media database. It
does not overwrite the resource database, instead mmrecov recovers it to the
resource directory, res.R. For syntax and option information about mmrecov,
refer to the Legato Command Reference Guide.
2. If the server has multiple devices configured and enabled, the following
message appears. If you receive this message, enter the name of the device
you are using for the recovery.
What is the name of the device you plan on using
[/dev/rmt/0hbn]? /dev/rmt/0hbn
3. When the following message appears, enter the save set ID for the latest
bootstrap. If you are recovering a cloned version of the bootstrap, specify
the save set ID associated with the clone.
Enter the latest bootstrap save set ID []: 20076
4. When the following message appears, enter the file number to begin the
recovery. If unknown, press [Enter].
Enter starting file number (if known) [0]: 130
5. When the following message appears, enter the first record number to
begin the recovery. If unknown, press [Enter].
Enter starting record number (if known) [0]: 0
6. When the following message appears, follow the prompt:
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Please insert the volume on which save set id 20076 started
into /dev/rmt/0hbn.
Once you have loaded the appropriate volume, the following message
appears:
Scanning /dev/rmt/0hbn for save set 20076; this might take
a while...
NetWorker then scans the volume for the appropriate save set and
recovers it. The NetWorker media database and resource database are
recovered when the following message appears:
If your resource files were lost, they are now recovered
in the ‘res.R’ directory. Copy or move them to the ‘res’
directory, after you have shut down the service. Then
restart the service.
3
Otherwise, just restart the service.
If the on-line index for the server-name was lost, it
can be recovered using the nsrck command.
Task 5: Rename the NetWorker Server Configuration Files
Because the configuration files cannot be reliably overwritten while the
NetWorker software is running, mmrecov recovered the res directory as res.R
by default. In addition, mmrecov might have recovered another server’s
configuration file in this directory.
To rename the configuration files:
1. Stop the daemons by entering the nsr_shutdown command at the
command line:
nsr_shutdown -a
2. Rename the existing /nsr/res directory to /nsr/res.orig:
mv res res.orig
3. Rename the recovered /nsr/res.R directory to /nsr/res:
mv res.R res
4. Restart the NetWorker server by first entering the nsrexecd command,
then entering the nsrd command, for example:
nsrexecd
nsrd
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Prerequisites
Note: You can also restart the NetWorker server by running the NetWorker
startup script for the appropriate platform.
5. After verifying that the NetWorker configurations are correct, remove the
/nsr/res.orig directory.
6. Run the nsrjb -HE command to reset the autochanger.
7. If you are using an autochanger, run the nsrjb -Iv command to
reinventory the autochanger; or run the nsrjb -Iv -S command to
reinventory only the affected slots.
Task 6: Recover All Client File Indexes
Once you recover the server’s media database and resource database, recover
all client file indexes on the NetWorker server. You will recover one client file
index for each NetWorker client that the NetWorker server backed up.
3
Note: Because a NetWorker server always has the NetWorker client installed,
this task includes recovering the client file index for the NetWorker server.
To recover all client file indexes:
1. Enter the nsrck -L7 command:
nsrck -L7 client_name
2. If you are using a cloned version of the client file index, the NetWorker
server may prompt you to load an original volume (not the clone volume).
To use the clone:
a. Enter [Ctrl]+[c] to exit out of nsrck and verify that the pending
original volume message has terminated.
b. Delete the records of the original volumes using the nsrmm -d
volume_name command. For example:
The NetWorker server requests the original volume mars.1. Because
this volume is not available, delete the mars.1 volume from the media
database using the following command:
nsrmm -d mars.1
c. Enter the nsrck -L7 command:
nsrck -L7 client_name
Note: Although you must recover a computer’s client file index before you can
select individual files to recover, you can recover an entire save set on a
computer by using a save set recover.
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Task 7: Recover the Application and User Data
To recover the application and user data that was on the NetWorker server:
1. Log in as root.
2. Load and inventory the devices. This ensures that the NetWorker server
can recognize the location of each volume.
Note: If you load a clone volume, you must either delete the original
volume from the media database or mark it as suspect in the media
database. If you are using a clone volume, it will be used for the remainder
of the recovery process.
3. Run the nwrecover program.
4. Mark all of the directories or files that you want to recover.
3
Important: Do not recover any UNIX operating system boot files that should
not be overwritten during a recovery. For more information on boot files, see
“Prerequisites” on page 28.
5. Click Start to begin the recovery.
Note: By default, the directed recover option is enabled when you install the
NetWorker client. If the directed recover option was disabled on the client
before the disaster, you need to explicitly set this option to disable directed
recoveries to this client. This option is set through the nsradmin command. For
more information about setting the disable directed recover option on the
NetWorker client, refer to the Legato NetWorker Administrator’s Guide, UNIX
Version.
Task 8: Perform a Test Backup and Recovery
To test the server recovery process:
1. Perform a test backup or recovery to make sure the server is fully
recovered.
2. Verify that the server and its associated clients are included in a scheduled
backup.
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Recovering a NetWorker Storage Node
Recovering a NetWorker Storage Node
The storage node allows you to access the volumes on which the backups for
all of the network computers reside. If the storage node experiences a disaster,
it must be recovered before you can restore application and user data to other
computers on the network.
The following sections provide information on recovering a NetWorker
storage node:
•
“Prerequisites” on page 40
•
“How to Recover a NetWorker Storage Node” on page 40
Prerequisites
3
Before recovering the NetWorker storage node, ensure that the UNIX
operating system is installed on the computer and that the NetWorker server
is functional and available on the network.
If you need to reinstall the UNIX operating system, see “Installing and
Configuring the UNIX Operating System” on page 28.
If you need to recover the NetWorker server, see “Recovering a NetWorker
Server” on page 32.
Additionally, ensure that you have the following:
•
Hostname of the NetWorker server.
•
Version and patch level of the NetWorker storage node software that was
on the computer before the disaster occurred.
•
Name of any links to NetWorker directories. An example of a typical link
from a NetWorker directory to a user directory is /nsr to /usr/nsr.
How to Recover a NetWorker Storage Node
This section describes how to recover a NetWorker storage node computer
back to the original computer or to a different computer.
To recover a NetWorker storage node, complete the following tasks:
40
•
“Task 1: Install the NetWorker Storage Node” on page 41
•
“Task 2: Recover the Application and User Data” on page 41
•
“Task 3: Perform a Test Backup and Recovery” on page 42
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Task 1: Install the NetWorker Storage Node
To install the NetWorker storage node software:
1. Install the same version of the NetWorker storage node software into its
original location.
Note: If you want to upgrade the storage node software, first recover the
storage node to its original state, and then perform the upgrade.
2. Install any NetWorker backup utility patches that were installed prior to
the disaster.
3. Re-create any links to NetWorker directories.
4. Optionally, use the nwrecover program to perform a test recovery to
ensure that the recovery process is functioning properly.
3
Note: The NetWorker client software is also installed when you install the
storage node software.
The storage node can now access volumes that contain backups for other
computers on the network. These volumes contain the application and user
data that are required to fully recover computers that were protected with the
NetWorker client software.
If you want to recover the application and user data for other NetWorker
clients, see “Recovering a NetWorker Client” on page 43.
If you want to recover application and user data that was on the storage node
computer, see, “Task 2: Recover the Application and User Data” on page 41.
Task 2: Recover the Application and User Data
To recover the application and user data that was on the NetWorker storage
node computer:
1. If you need to determine which volumes contain the application and user
data backups for this computer, use the mminfo -avot command on the
NetWorker server, for example:
# mminfo -avot -c storage_node_name
where storage_node_name is the hostname of the computer whose
application and user data you are recovering.
2. Start the nwrecover program on the storage node computer.
3. Mark all of the directories and files that you want to recover.
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Prerequisites
Important: Do not recover any UNIX operating system boot files that should
not be overwritten during a recovery. For more information on boot files, see
“Prerequisites” on page 28.
4. To set the recover options, select Recover Options from the Options menu.
5. In the Recover Options dialog box, selecting Overwrite Existing File.
Important: If you did not set the recover options, you must select the
Overwrite Existing File option when the Naming Conflict dialog box appears
during the recovery process. To enable automatic overwriting of files with the
same name, select the Suppress Further Prompting option in the Naming
Conflict dialog box.
3
6. Select Start.
7. Reboot the computer when the recovery is complete. The computer should
now be restored as it was prior to the disaster.
Note: By default, the directed recover option is enabled when you install the
NetWorker client. If the directed recover option was disabled on the client
before the disaster, you need to explicitly set this option to disable directed
recoveries to this client. This option is set through the nsradmin command. For
more information about setting the disable directed recover option on the
NetWorker client, refer to the Legato NetWorker Administrator’s Guide, UNIX
Version.
Task 3: Perform a Test Backup and Recovery
To test the NetWorker storage node backup and recovery process:
1. Perform a test backup using each of the Legato backup utilities
incorporated into the backup solution.
2. Perform a test recovery using the Legato utility used to back up the data.
For details, refer to the Legato NetWorker Administrator’s Guide.
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Recovering a NetWorker Client
The following sections provide information on recovering a NetWorker client:
•
“Prerequisites” on page 43
•
“How to Recover a NetWorker Client” on page 43
Prerequisites
Before recovering the NetWorker client, ensure that the UNIX operating
system is installed on the computer and that the NetWorker server is
functional and available on the network.
If you need to reinstall the UNIX operating system, see “Installing and
Configuring the UNIX Operating System” on page 28.
3
If you need to recover the NetWorker server, see “Recovering a NetWorker
Server” on page 32.
Additionally, ensure that you have the following:
•
Version and patch level of the NetWorker client.
•
The name of the computer on which the NetWorker server is running.
•
Name of any links to NetWorker directories. An example of a typical link
from a NetWorker directory to a user directory is /nsr to /usr/nsr.
How to Recover a NetWorker Client
This section describes how to recover a NetWorker client computer back to the
original computer or to a different computer.
To recover a NetWorker client, complete the following tasks:
•
“Task 1: Install NetWorker Client” on page 43
•
“Task 2: Recover the Application and User Data” on page 44
•
“Task 3: Perform a Test Backup and Recovery” on page 45
Task 1: Install NetWorker Client
To install the NetWorker client software:
1. Install the same version of the NetWorker client into its original location.
Note: If you want to upgrade the client software, first recover the client to its
original state, and then perform the upgrade.
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Prerequisites
2. Install any NetWorker backup utility patches that were installed prior to
the disaster.
3. Re-create any links to NetWorker directories.
4. Optionally, use the nwrecover program to perform a test recovery to
ensure that the recovery process is functioning properly.
Task 2: Recover the Application and User Data
To recover the application and user data:
1. If you need to determine which volumes contain the application and user
data backups for this computer, use the mminfo -avot command on the
NetWorker server, for example:
# mminfo -avot -c client_name
3
where client_name is the hostname of the computer whose application and
user data you are recovering.
2. Start the nwrecover program on the client computer whose application
and user data you are recovering.
3. Mark all of the directories and files that you want to recover.
Important: Do not recover any UNIX operating system boot files that should
not be overwritten during a recovery. For more information on boot files, see
“Prerequisites” on page 28.
4. To set the recover options, select Recover Options from the Options menu.
5. In the Recover Options dialog box, selecting Overwrite Existing File.
Important: If you did not set the recover options, you must select the
Overwrite Existing File option when the Naming Conflict dialog box appears
during the recovery process. To enable automatic overwriting of files with the
same name, select the Suppress Further Prompting option in the Naming
Conflict dialog box.
6. Select Start.
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7. Reboot the computer when the recovery is complete. The computer should
now be restored as it was prior to the disaster.
Note: By default, the directed recover option is enabled when you install the
NetWorker client. If the directed recover option was disabled on the client
before the disaster, you need to explicitly set this option to disable directed
recoveries to this client. This option is set through the nsradmin command. For
more information about setting the disable directed recover option on the
NetWorker client, refer to the Legato NetWorker Administrator’s Guide, UNIX
Version.
Task 3: Perform a Test Backup and Recovery
To test the NetWorker client backup and recovery process:
1. Perform a test backup using each of the Legato backup utilities
incorporated into the backup solution.
3
2. Perform a test recovery using the Legato utility used to back up the data.
For details, refer to the Legato NetWorker Administrator’s Guide.
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Prerequisites
3
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This chapter explains how to recover from a disaster on a host computer in the
following configurations:
•
NetWorker release 7.x server or storage node on Microsoft Windows
.NET or Windows 2000
•
NetWorker release 7.x client on Microsoft Windows .NET, Windows XP
Professional, Windows 2000, or Windows NT 4.0
Note: The term autochanger refers to a variety of robotic data storage devices,
including autoloaders, carousels, datawheels, jukeboxes, and near-line
storage.
Note: Although a Microsoft Removable Storage library can be an autochanger
or a stand-alone drive, the NetWorker software provides optional Removable
Storage support for autochangers only. For more information, refer to the
Legato NetWorker Administrator’s Guide, Microsoft Windows Version.
This chapter includes the following sections:
•
“Disaster Recovery Summary Procedures” on page 48
•
“Disaster Recovery of Multiple Computers” on page 51
•
“Replacing a Hard Drive” on page 52
•
“Performing Windows ASR Recovery” on page 53
•
“Repairing a Windows NT 4.0 Operating System Installation” on page 57
•
“Recovering a Windows Installation” on page 60
•
“Recovering a NetWorker Server” on page 66
•
“Recovering a NetWorker Client or Storage Node” on page 82
•
“Recovery of DHCP and WINS Databases” on page 87
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Disaster Recovery Summary Procedures
Disaster Recovery Summary Procedures
The following summary procedures are intended to be used as a guide to the
detailed procedures required for performing NetWorker disaster recovery on
any supported Microsoft Windows platform. Experienced NetWorker
administrators may find that these summary procedures are sufficient for
most tasks. Users who want more information should refer to the detailed
instructions in subsequent sections of this chapter.
NetWorker Server Recovery Summary Procedure
To perform a disaster recovery on a NetWorker server:
1. Replace the hard drive, if necessary. For detailed instructions, see
“Replacing a Hard Drive” on page 52.
2. Reinstall the operating system, if necessary. For detailed instructions, see
“Recovering a Windows Installation” on page 60.
Note: For a guide to the detailed instructions for each of the remaining steps,
see the task list under “Recovering a NetWorker Server” on page 66.
3. Reinstall the NetWorker software, if necessary.
4
4. Configure the storage device. Depending on the configuration, do one of
the following:
•
If you are using a stand-alone storage device, configure the device
and load the volume that contains the latest bootstrap.
•
If you are using an autochanger with Removable Storage disabled,
run the following commands from the command prompt:
a. Run jbconfig to create a NetWorker Autochanger resource.
b. Run nsrjb -vHE to reset the autochanger.
c. Run nsrjb -Iv -S # to inventory the backup tape in slot # (the tape
that contains the latest bootstrap).
d. Run nsrjb -lnv -S # -f device_name to load the backup tape in slot #
into the device.
•
If you are using an autochanger with Removable Storage enabled:
a. Use the Microsoft Management Console (MMC) Removable
Storage snap-in to inventory the autochanger.
b. Use the NetWorker Administrator program to create a Device
resource for each drive in the autochanger.
c. Use the Removable Storage MMC snap-in to mount the tape that
contains the bootstrap.
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Note: If the storage device required for a NetWorker server recovery is
connected to a remote storage node, you might have to partially recover the
storage node before you can recover the NetWorker server. For more
information, see “Partial Recovery of a NetWorker Storage Node” on page 82.
5. If you know the bootstrap save set ID, recover the NetWorker media
database and resource configuration files by running the mmrecov
command from the command prompt.
If you do not know the bootstrap save set ID:
a. Look in the savegrp.log file, or run the scanner -B device_name
command from the command prompt to determine the bootstrap
save set ID.
b. Run the mmrecov command to recover the NetWorker media
database and resource configuration files.
6. Stop the NetWorker services.
7. Copy the contents of the <NetWorker_install_path>\res.R directory to the
<NetWorker_install_path>\res directory.
8. Restart the NetWorker services.
9. Reset and inventory the autochanger, if you are using one. If you are using
a stand-alone drive, skip this step and proceed to step 10.
•
If Removable Storage is disabled, do the following:
a. Run the nsrjb -vHE command to reset the autochanger.
b. Run the nsrjb -Iv command to inventory the autochanger.
•
If Removable Storage is enabled, do the following:
a. In the NetWorker Administrator program, delete the Removable
Storage jukebox through the Autochangers dialog box.
b. Create a new Removable Storage jukebox using the jbconfig
command at the command prompt.
c. In the NetWorker Administrator program, use the Autochanger
Operations dialog box to reallocate all of the NetWorker volumes
from the Import pool.
d. In the NetWorker Administrator program, click Reset in the
Autochanger Operations dialog box. Once the reset is complete,
click Inventory.
10. Recover the client file indexes by running the nsrck -L7 command from
the command prompt.
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NetWorker Client or Storage Node Recovery Summary Procedure
11. Recover the client’s data and SYSTEM save sets using the NetWorker User
program.
12. Reboot the computer after the recovery is complete.
13. If you are using an autochanger with Removable Storage enabled:
a. Use the Removable Storage MMC snap-in to mount the tape that
contains the bootstrap.
b. Run mmrecov to recover the NetWorker media database and
resource configuration files.
c. Stop the NetWorker services.
d. Rename <NetWorker_install_path>\res.R to
<NetWorker_install_path>\res.
e. Start the NetWorker services.
f. On the Autochanger Operations dialog box, click Reset to reset the
jukebox.
14. Verify the recovery.
4
NetWorker Client or Storage Node Recovery Summary Procedure
Note: In most cases, the NetWorker server should be fully functional before
you begin recovery of its associated clients or storage nodes. However, if the
storage device required for a NetWorker server recovery is connected to a
remote storage node, you might have to partially recover the storage node
before you can recover the NetWorker server. For more information, see
“Partial Recovery of a NetWorker Storage Node” on page 82.
To perform a disaster recovery on a NetWorker client or storage node:
1. Replace the hard drive, if necessary. For instructions, see “Replacing a
Hard Drive” on page 52.
2. To begin the software recovery, do one of the following, depending the
Windows version:
•
50
For Windows .NET and Windows XP Professional NetWorker clients
only, perform an ASR recovery if possible. This requires a current
ASR disk or ASR backup from which you can create an ASR disk. For
instructions, see “Performing Windows ASR Recovery” on page 53. If
you use the ASR recovery method, you do not need to perform any of
the remaining steps in this summary procedure.
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•
For Windows 2000 NetWorker clients (or Windows .NET or
Windows XP Professional clients for which an ASR disk or save set is
not available), reinstall the operating system if necessary. For
instructions, see “Recovering a Windows Installation” on page 60.
•
For Windows NT 4.0 NetWorker clients, repair the operating system
if necessary. For instructions, see “Repairing a Windows NT 4.0
Operating System Installation” on page 57.
3. Ensure that the recovery requirements are satisfied. For instructions, see
“Task 1: Satisfy the NetWorker Client or Storage Node Recovery
Requirements” on page 83.
4. Reinstall the NetWorker software, if necessary. For instructions, see “Task
2: Reinstall the NetWorker Client or Storage Node Software” on page 83.
5. Recover the data and SYSTEM save sets using the NetWorker User
program. For instructions, see “Task 3: Recover the NetWorker Client or
Storage Node Data” on page 84.
6. Reboot the computer after the recovery is complete.
7. Verify the recovery. For instructions, see “Task 4: Verify the NetWorker
Client or Storage Node Recovery” on page 86.
4
Disaster Recovery of Multiple Computers
If you are performing disaster recovery on more than one computer, recover
the computers in the following order:
1. The NetWorker server
2. The NetWorker storage nodes (if any) used by the NetWorker server
3. The NetWorker clients associated with the NetWorker server
Note: If the backup device to be used for the recovery is connected to a storage
node, you might have to perform a partial recovery of the storage node before
you begin recovery of the NetWorker server. For more information, see
“Recovering a NetWorker Client or Storage Node” on page 82.
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Disaster Recovery of Clustered Computers
Disaster Recovery of Clustered Computers
For disaster recovery of a computer that was running NetWorker software in
a cluster environment, see the appropriate chapter for procedures:
•
“Chapter 6: Microsoft Cluster Disaster Recovery (Windows NT 4.0)”
•
“Chapter 7: Microsoft Cluster Disaster Recovery (Windows 2000 and
.NET)”
Replacing a Hard Drive
Important: To ensure that you have enough disk space to recover all of the
failed hard drive’s data, install a new hard drive with at least as much storage
capacity as the original drive.
Recovery of the SYSTEM save sets requires extra disk space for temporary
files. The recovery operation might require as much extra disk space as the
total size of the SYSTEM save sets. For an estimate, run mminfo from the
command prompt and check the size of the SYSTEM save sets. In many cases,
about 500 MB of temporary disk space is sufficient.
4
To replace the failed hard drive, the following information is required:
•
The storage capacity of the hard drive being replaced, plus the amount of
extra disk space required for temporary files
•
The drive letter, size, format, and volume label assigned to each partition
on the hard drive being replaced:
Windows .NET, Windows XP Professional, and Windows 2000 — This
information is available in Control Panel > Administrative Tools >
Computer Management > Disk Management.
Windows NT 4.0 — This information is available in Start > Programs >
Administrative Tools (Common) > Disk Administrator.
Note: Although it will not affect NetWorker operation, you may also want to
note any use of mirroring, RAID/striping, compression, or volume sets.
Install, partition, and format the new hard drive. For instructions, refer to the
hard drive manufacturer’s documentation and the appropriate Microsoft
documentation.
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Performing Windows ASR Recovery
Microsoft ASR is a feature of the Windows .NET and Windows XP
Professional operating systems. For more information about NetWorker
software support for ASR, including procedures for performing ASR backups
and creating an ASR disk, refer to the Legato NetWorker Administrator’s Guide,
Microsoft Windows Version.
Important: The ASR recovery method is supported only for NetWorker clients
on Windows .NET and XP Professional platforms.
ASR recovery is not supported for NetWorker clients operating in a Windows
.NET Microsoft Cluster Server (MSCS) environment.
To recover a NetWorker server or storage node, or NetWorker clients
operating in a Windows .NET MSCS environment, you must use the legacy
NetWorker disaster recovery method. For details, see the appropriate
procedure:
•
“NetWorker Server Recovery Summary Procedure” on page 48
•
“NetWorker Client or Storage Node Recovery Summary Procedure” on
page 50.
•
“Chapter 7: Microsoft Cluster Disaster Recovery (Windows 2000 and
.NET)” on page 127
To use the ASR recovery method, perform these tasks in the specified order:
•
“Task 1: Perform an ASR Recovery of the NetWorker Client Computer”
on page 54
•
“Task 2: Restore Components that Require Special Handling” on page 55
•
“Task 3: Verify the NetWorker Client Recovery” on page 56
OEM Recovery CD Limitations
Many computer manufactures, such as Dell, Hewlett-Packard, Compaq, and
IBM, provide a recovery CD or DVD with each system, which typically
includes the Windows OS installation files and any additional software that
was included with the system. These recovery disks cannot be used to perform
an ASR recovery.
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ASR Recovery Requirements
Important: To perform an ASR recovery, you must have an official Microsoft
Windows installation CD for the version of Windows you are recovering. If
you have only an OEM recovery CD that includes the Windows installation
files, skip this section and proceed to “Recovering a Windows Installation” on
page 60. Refer to the OEM documentation as necessary.
ASR Recovery Requirements
To perform an ASR recovery of a NetWorker client host computer, you need:
4
•
The ASR disk for the computer you are recovering. If a current ASR disk
or ASR save set is not available for the failed NetWorker client host
computer, you must use the legacy NetWorker disaster recovery method.
For a guide to the required procedures, see “Recovering a NetWorker
Client or Storage Node” on page 82.
•
The official Microsoft Windows .NET or Windows XP Professional
installation CD for the computer you are recovering
•
The latest NetWorker backup for the computer you are recovering
Note: To avoid delays during a recovery, if you routinely move NetWorker
backup media to an offsite location for safekeeping, ensure that all necessary
volumes are available. To list the media associated with the files you want to
recover, run mminfo -mv from the command prompt. For more information
about the mminfo command, refer to the Legato Command Reference Guide.
Task 1: Perform an ASR Recovery of the NetWorker Client Computer
To perform an ASR recovery of the NetWorker client computer:
1. On the NetWorker client computer you are recovering, boot from the
Windows .NET or Windows XP Professional installation CD.
Note: You may need to run the BIOS setup program to configure the computer
to boot from the CD-ROM drive. For the procedure, refer to the computer
manufacturer’s documentation.
2. Watch closely at the beginning of the boot process. If prompted, press a
key to boot from the CD-ROM drive.
3. During the text-mode phase of Windows setup, watch the lower portion
of the screen. When prompted, press [F2] to display the ASR Recovery
menu. Follow the instructions on the screen.
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4. When prompted, insert the ASR disk into the A: drive and press a key to
continue. ASR formats the system partition, copies files, and begins the
Windows installation.
Note: Due to a Microsoft Windows XP Professional problem, when you are
prompted to insert the ASR disk and press a key to continue, you may need to
press a key several times before the system recognizes the disk and proceeds
with the recovery. This problem does not occur on Windows .NET systems.
5. If you did not select the Pause During Recovery option while creating the
ASR disk, a fully automated recovery will be performed; there will be no
pause and you will not be prompted to select which save sets to recover.
If you selected the Pause During Recovery option while creating the ASR
disk, during the graphical phase of Windows setup, the NetWorker ASR
Client dialog box appears. Expand My Computer and mark the save sets
you want to recover, then click Continue. For example, mark the following
save sets:
C:\
D:\
SYSTEM STATE:\
4
SYSTEM DB:\
SYSTEM FILES:\
Note: For more information about the Pause During Recovery option, refer to
the Legato NetWorker Administrator’s Guide, Microsoft Windows Version.
Task 2: Restore Components that Require Special Handling
Important: Due to limitations in Microsoft ASR functionality, the following
system state components can not be correctly restored during ASR recovery:
–
COM+ Registration Database
–
Disk Quota Database
–
Windows Management Instrumentation Database
If the NetWorker client being recovered uses any of these components, after an
ASR recovery you must perform the following procedure. If the NetWorker
client you are recovering does not use any of these components, skip this task
and proceed to “Task 3: Verify the NetWorker Client Recovery” on page 56.
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Task 3: Verify the NetWorker Client Recovery
For NetWorker clients with components that require special handling, do the
following after ASR recovery:
1. Log on with administrator privileges to the target computer.
2. Start the NetWorker User program.
3. Click the Recover toolbar button.
4. In the Source Client dialog box, click OK to select the local client.
5. In the Destination Client dialog box, click OK to select the local client.
6. In the Recover window, select the SYSTEM STATE save set and check for
the presence of the COM+ Registration Database component; if it is
present, mark the SYSTEM STATE save set for recovery.
7. In the Recover window, select the SYSTEM DB save set and check for the
presence of the Disk Quota Database and the Windows Management
Instrumentation Database. If either component is present, mark the
SYSTEM DB save set for recovery.
8. If you marked any save sets for recovery, click the Start toolbar button to
begin the recovery.
4
Task 3: Verify the NetWorker Client Recovery
To verify the NetWorker client recovery:
1. Reboot the NetWorker client host computer and verify that the NetWorker
Remote Exec and NetWorker Power Monitor services have started.
Note: You can disable the NetWorker Power Monitor service if it is not
needed. For more information, refer to the Legato NetWorker Administrator’s
Guide, Microsoft Windows Version.
2. Use the Windows Event Viewer to examine the event logs for errors. In
particular, check for:
•
Service startup errors related to the Windows system state
•
Errors regarding the recovery of Windows system-protected files
For information about how the NetWorker software handles the Windows
system state and system-protected files, refer to the Legato NetWorker
Administrator’s Guide, Microsoft Windows Version.
3. Verify that any applications (such as Microsoft Office) that were running
prior to the disaster have been properly restored. To verify this, start each
application and open a previously saved document.
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Repairing a Windows NT 4.0 Operating System Installation
This section explains how to use NetWorker software to create a Windows NT
4.0 Emergency Repair Disk (ERD), and how to use the ERD to repair a
damaged Windows NT 4.0 operating system installation.
To repair a Windows NT 4.0 operating system installation requires:
•
Windows NT 4.0 Setup Disks (three disks)
•
Windows NT 4.0 installation CD-ROM (same version that was installed
prior to the disaster)
•
Windows NT 4.0 Service Pack (same level that was installed prior to the
disaster)
•
One of the following:
•
–
A current Windows NT 4.0 ERD for the computer you are recovering
–
The NetWorker backup or clone volume that contains the most recent
REPAIRDISK save set for the computer you are recovering
The Administrator account password for the computer you are
recovering (required only if you are repairing the registry or system state)
4
Repairing Windows NT 4.0
If you do not have a current ERD, see “Creating an ERD from the REPAIRDISK
Save Set” on page 57.
If you have a current ERD, see “How to Use the ERD to Repair the Windows
NT 4.0 Installation” on page 59.
Creating an ERD from the REPAIRDISK Save Set
If you do not have a current ERD for the computer you are recovering, you can
create one using either the NetWorker User program or the
<NetWorker_install_path>\bin\recover.exe command.
Because the operating system of the computer you are recovering needs repair,
to create an ERD you must use a different NetWorker client computer to
perform a directed recovery of the REPAIRDISK save set. Before you begin the
directed recovery, ensure that:
•
The computer you will use to recover the REPAIRDISK save set is a
functional NetWorker for Windows client, connected to the NetWorker
server you will use for the recovery.
•
The Client resource for the computer you are recovering includes in its
Remote Access List the NetWorker server you will use for the recovery.
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•
The NetWorker server you will use for the recovery includes in its
Administrator list the account you will use to recover the REPAIRDISK
save set.
For details about meeting these requirements, refer to the Legato NetWorker
Administrator’s Guide, Microsoft Windows Version.
How to Use the NetWorker User Program to Create an ERD
To create an ERD using the NetWorker User program:
1. Start the NetWorker User program.
2. Insert a blank, formatted disk in the A: drive.
3. Click the Recover toolbar button.
4. In the Source Client dialog box, select the computer you are recovering
and click OK.
5. In the Destination Client dialog box, select the computer you are using to
create the ERD and click OK.
6. Mark the REPAIRDISK save set for recovery.
4
7. From the Options menu, select Recover Options.
8. In the Relocate Recovered Data To dialog box, enter A:\ and click OK.
9. Click the toolbar Start button to begin recovery of the REPAIRDISK save
set to the disk in the A: drive.
Important: If the REPAIRDISK save set is larger than 1.44 MB, it will not fit on
a disk. This is a known limitation of the Windows NT 4.0 operating system; no
workaround is available.
How to Use the NetWorker recover Command to Create an ERD
Important: The NetWorker recover.exe program is located in
<NetWorker_install_path>\bin. There is also a Windows system command
named recover.exe, located in %SystemRoot%\System32. To avoid executing
the Windows version of recover.exe when attempting to execute the
NetWorker command, you should do one of the following:
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Change to <NetWorker_install_path>\bin before executing the recover.exe
command.
•
At the command prompt, include the full path and filename to
<NetWorker_install_path>\bin\recover.exe.
•
Ensure that <NetWorker_install_path>\bin occurs before
%SystemRoot%\System32 in your PATH environment variable.
To create an ERD using the NetWorker recover command:
1. On the NetWorker server, insert a blank, formatted disk into the A: drive.
2. Change to the directory that contains the NetWorker binary files. The
default location is <NetWorker_install_path>\bin.
3. Recover the REPAIRDISK save set using the recover command as follows:
recover -c failed_hostname
recover> cd /
recover> add REPAIRDISK
recover> relocate a:\
4
recover> recover
This procedure initiates recovery of the failed computer’s REPAIRDISK
save set to the disk in the NetWorker server’s A: drive.
How to Use the ERD to Repair the Windows NT 4.0 Installation
To use the ERD to repair the Windows NT 4.0 installation:
1. On the computer you are recovering, insert Windows NT 4.0 Setup Disk 1
into drive A: and reboot the computer.
2. When prompted, insert Windows NT 4.0 Setup Disk 2 into drive A: and
press [Enter].
3. When the Setup Welcome screen appears, press [R] to select the Repair
option.
4. Select the appropriate emergency repair options, then select Continue and
press [Enter].
5. When prompted, insert Windows NT 4.0 Setup Disk 3 into the A: drive
and press [Enter].
6. Insert the ERD into the A: drive and press [Enter].
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Recovering a Windows Installation
7. Follow the prompts on the screen to repair the Windows files:
•
Press [Enter] to repair the specified file.
•
Press [Esc] if you do not want to repair the specified file.
8. Reboot the computer.
9. The operating system should now be functional. If the operating system is
not functional, see “Recovering a Windows Installation” on page 60.
If the operating system appears to be functional:
•
Verify that the network protocols are working properly by running
ping using the NetWorker server’s hostname.
•
Verify that the name-to-address resolution is working properly by
running nslookup using the NetWorker server’s fully qualified
domain name.
For more information about the ping and nslookup commands, refer to
the Microsoft documentation.
10. If you are using a device that is not directly supported by Windows NT
4.0, you might need to reinstall the device driver software. For information
on device driver software, refer to the device manufacturer’s
documentation.
4
Recovering a Windows Installation
This section explains how to recover all supported versions of the Windows
operating system during disaster recovery of a NetWorker server, storage
node, or client host computer. You can recover the Windows operating system
to the original computer or to a different computer.
Note: For Windows .NET or Windows XP Professional systems, use the
following procedure only as a last resort for recovering a Windows
installation. Instead, use the ASR recovery method if possible. For more
information, see “Performing Windows ASR Recovery” on page 53.
Recovery Requirements
To recover the Windows operating system, you need to know the following
configuration details about the computer immediately prior to the disaster:
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•
Operating system version and any installed patches, service packs, or
option packs
•
Path location of the operating system installation
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Host properties:
–
•
Computer name
–
Fully qualified domain name
–
Administrator account password
TCP/IP properties:
–
Adapter type
–
IP address
–
Default gateway
–
Subnet mask
–
DNS server
–
WINS server (if used)
•
Any other protocols installed
•
Removable Storage enabled/disabled settings
•
Virtual memory settings
•
Date and time properties
•
Localization properties
4
How to Recover the Windows Operating System
To recover the operating system, install and configure only the features that
enable the computer to communicate over the network. The other Windows
configuration settings are restored during the NetWorker recovery.
To recover a Windows installation, perform these tasks in the specified order:
“Task 1: Install the Windows Operating System” on page 62
“Task 2: Configure the Devices and Test the Operating System” on page 65
Important: If you are recovering the operating system to a different computer:
•
Assign the same computer name to the new computer that was used for
the original computer; otherwise you will not be able to recover data that
was backed up using the original computer name.
•
Assign the same IP address to the new computer that was used for the
original computer; otherwise the NetWorker server will assign the
computer a new host ID. If the new computer does not have the same IP
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Recovery Requirements
address as the original computer, you must reregister the NetWorker
software. For information on registering NetWorker software, refer to the
Legato NetWorker Installation Guide, Windows Version.
Task 1: Install the Windows Operating System
Important: If you want to upgrade Windows during the recovery, first recover
the Windows version that was installed immediately prior to the disaster, then
upgrade after you have completed the recovery.
To install the Windows operating system:
1. Install the same version of Windows, including any patches, service packs,
or option packs in use immediately prior to the disaster.
During the installation, be sure to set the following configuration options
as they were prior to the disaster:
4
•
Windows installation location
•
Computer name
•
Administrator account password
•
Regional settings
•
Date and time settings
Note: If the computer you are recovering was a domain controller prior to the
disaster, that configuration will be restored later in the recovery process.
2. After you finish installing the operating system, configure the computer as
follows:
Windows .NET and Windows .XP Professional:
a. Start the Control Panel System tool.
b. On the System Properties dialog box, select the Computer Name tab
and click the Change button.
c. In the Computer Name Changes dialog box, ensure that the
computer name is correct and that the computer is a member of the
correct domain. Click More.
d. In the DNS Suffix and NetBIOS Computer Name dialog box, ensure
that the Primary DNS Suffix Of This Computer text box contains the
correct domain name (the name that is appended to the hostname to
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form the fully qualified domain name). For example, the fully
qualified domain name for a computer named kingdome, might be
kingdome.seattle.washington.com.
e. Start the Control Panel Local Area Connection tool.
f. In the Local Area Connection Status dialog box, click properties.
g. In the Local Area Connection Properties dialog box, select Internet
Protocol (TCP/IP) and click Properties.
h. In the Internet Protocol (TCP/IP) Properties dialog box, set the
TCP/IP properties as they were prior to the disaster, with the same IP
address, subnet mask, default gateway, and DNS server.
Windows 2000:
a. Start the Control Panel System tool.
b. In the System Properties dialog box, select the Network Identification
tab and click Properties.
c. In the Identification Changes dialog box, ensure that the computer
name is correct and that the computer is a member of the correct
domain. Click More.
d. In the DNS Suffix and NetBIOS Computer Name dialog box, ensure
that the Primary DNS Suffix Of This Computer box contains the
correct domain name (the name that is appended to the host name to
form the fully qualified domain name). For example, the fully
qualified domain name for a computer named kingdome, might be
kingdome.seattle.washington.com.
e. Start the Control Panel NetWork and Dial-up Connections tool.
f. In the Network and Dial-up Connections window, right-click Local
Area Connection and select properties.
g. In the Local Area Connection Properties dialog box, select Internet
Protocol (TCP/IP) and click Properties.
h. In the Internet Protocol (TCP/IP) Properties dialog box, set the
TCP/IP properties as they were prior to the disaster, with the same IP
address, subnet mask, default gateway, and DNS server.
Windows NT 4.0:
a. Start the Control Panel Network tool.
b. In the Network dialog box, select the Identification tab and ensure
that the computer name and domain are correct.
c. Click the Protocols tab, select TCP/IP and click Properties.
d. In the Microsoft TCP/IP Properties dialog box, set the TCP/IP
properties as they were prior to the disaster, with the same IP
address, subnet mask, default gateway, and DNS server.
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3. In the hosts file (%SystemRoot%\system32\drivers\etc\hosts) make an entry
for the NetWorker server to be used in the recovery. NetWorker software
requires this entry when:
•
DNS is not in use or no DNS server is available
•
The NetWorker server host you are recovering is also a DNS server
The entry in the hosts file must include the IP address, the fully qualified
domain name, and the computer name, all on the same line. For example:
123.56.890.474 kingdome.seattle.washington.com kingdome
4. Configure the virtual memory as it was prior to the disaster:
Windows .NET and Windows XP Professional:
a. Start the Control Panel System tool.
b. In the System Properties dialog box, select the Advanced tab and
click Settings in the Performance section.
c. In the Performance Options dialog box, select the Advanced tab and
click Change in the Virtual Memory section.
d. In the Virtual Memory dialog box, set the virtual memory options.
Click OK.
4
Windows 2000:
a. Start the Control Panel System tool.
b. In the System Properties dialog box, select the Advanced tab and
click Performance Options.
c. In the Performance Options dialog box, click Change.
d. In the Virtual Memory dialog box, set the virtual memory options.
Click OK.
Windows NT 4.0:
a. Start the Control Panel System tool.
b. In the System Properties dialog box, select the Performance Tab.
c. On the Performance tab, click Change.
d. In the Virtual Memory dialog box, set the virtual memory options.
Click OK.
5. Reinstall any additional Windows components previously installed
through Windows Setup, such as Gateway Services for NetWare.
Note: Do not upgrade OEM drivers for network interface cards (NIC) with the
OEM Service Pack version of the NIC drivers.
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Task 2: Configure the Devices and Test the Operating System
If the computer you are recovering is a NetWorker server or storage node,
configure any devices required by the NetWorker software.
To configure the devices and test the operating system:
1. Configure any devices required by the NetWorker software, for example
SCSI pass-through devices for autochangers.
2. Ensure that Removable Storage is configured as it was prior to the disaster.
To enable or disable Removable Storage:
a. On the desktop, right-click My Computer and select Manage.
b. In the left pane of the Computer Management window, expand
Storage\Removable Storage\Physical Locations.
c. Right-click the icon for the Removable Storage jukebox and select
Properties.
d. If you plan to configure the NetWorker software to use Removable
Storage, select the Enable Library check box in the Properties dialog
box.
If you do not plan to configure the NetWorker software to use
Removable Storage, clear the Enable Library check box in the
Properties dialog box.
4
e. Repeat step c and step d for each stand-alone drive or autochanger
connected to the NetWorker server or storage node host computer.
The NetWorker software supports optional use of Removable Storage for
autochangers only. Ensure that Removable Storage is disabled for all
stand-alone drives. For more information about Removable Storage, refer
to the Legato NetWorker Administrator’s Guide, Microsoft Windows Version.
3. Verify the following:
•
Operating system is functioning properly.
•
Network protocols are functioning properly. Test by using the ping
command.
•
Name to address resolution is correct. Test by using the nslookup
command with the fully qualified domain name of the NetWorker
server, storage node, or client you are recovering.
•
The operating system recognizes the necessary devices. If the devices
are not recognized, you might need to:
–
Load the SCSI driver.
–
Install the device driver software.
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Recovering a NetWorker Server
4. To complete the recovery process:
•
For a NetWorker server, see “Recovering a NetWorker Server” on
page 66.
•
For a NetWorker client or storage node, see “Recovering a NetWorker
Client or Storage Node” on page 82.
Recovering a NetWorker Server
This section explains how to recover a NetWorker server on a Windows .NET
or Windows 2000 host computer.
Important: Before you begin a NetWorker server recovery, you should
understand the information about SYSTEM save sets in the Legato NetWorker
Administrator’s Guide, Microsoft Windows Version.
Note: For Windows .NET systems, use the following procedure only as a last
resort for recovering a NetWorker server. Instead, use the ASR recovery
method if possible. For more information, see “Performing Windows ASR
Recovery” on page 53.
4
NetWorker Server Recovery Requirements
To recover a NetWorker server requires:
•
The same release and patch level of the NetWorker software that was in
use immediately prior to the disaster
•
The installation path of the NetWorker software prior to the disaster
•
Backup or clone volumes that contain the NetWorker server’s most recent
bootstrap, client file indexes, and filesystem data
Note: To avoid delays during a recovery, if you routinely move NetWorker
backup media to an offsite location for safekeeping, ensure that all necessary
volumes are available. To list the media associated with the files you want to
recover, run mminfo -mv from the command prompt. For more information
about the mminfo command, refer to the Legato Command Reference Guide.
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How to Recover a Windows 2000 NetWorker Server
To recover a Windows 2000 NetWorker server, perform the following tasks in
the order specified:
•
“Task 1: Install the NetWorker Server Software” on page 67
•
“Task 2: Configure the NetWorker Server” on page 68
•
“Task 3: Locate the NetWorker Server Bootstrap Save Set ID” on page 70
•
“Task 4: Recover the NetWorker Server Bootstrap” on page 72
•
“Task 5: Rename the Resource Configuration Files” on page 74
•
“Task 6: Reset and Inventory the Autochanger” on page 74
•
“Task 7: Recover the NetWorker Server’s Client File Indexes” on page 76
•
“Task 8: Recover the NetWorker Server Data” on page 78
•
“Task 9: Restore the Removable Storage Jukebox Configuration” on page
80
•
“Task 10: Verify the NetWorker Server Recovery” on page 81
Important: When recovering a NetWorker server that was also being used as
a Legato License Manager server (not recommended), the lictype.res file of the
Legato License Manager is not restored during the NetWorker server
recovery. This is because the Legato License Manager files and directories are
not considered part of the NetWorker software. After completing the disaster
recovery on the NetWorker server, you must explicitly recover the Legato
License Manager as a client of the NetWorker server.
Task 1: Install the NetWorker Server Software
Important: If you updated from NetWorker release 6.x and have not yet
performed a scheduled backup of the NetWorker server, reinstall NetWorker
release 6.x and use it to recover the bootstrap, then update the NetWorker
software and proceed with the recovery.
To install the NetWorker server software:
1. Install to its original path location the release of the NetWorker server
software that was in use prior to the disaster. For instructions, refer to the
Legato NetWorker Installation Guide, Microsoft Windows Version.
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NetWorker Server Recovery Requirements
During the installation, keep the following points in mind:
•
If the NetWorker installation kit is available on a shared drive, you
can install it over the network.
•
To update the NetWorker software, first recover the server to its state
immediately prior to the disaster, then perform the update.
•
You do not need to reload the license enablers; they will be restored
later in the recovery process.
•
Because the NetWorker mmrecov command is case sensitive, the
NetWorker installation path must be in the same case as the original.
For example, C:\Program Files\Legato\nsr is not same as C:\Program
Files\legato\NSR.
2. Install any NetWorker patches that were in use prior to the disaster.
Task 2: Configure the NetWorker Server
To configure the NetWorker server:
1. In the NetWorker Administrator program, open the NetWorker server’s
Client resource and verify that the Aliases attribute (in the Preferences tab)
contains the correct information. For example, aliases for a computer
named kingdome might be:
4
kingdome
kingdome.seattle.washington.com
2. Create and configure the NetWorker server’s Device resources. Do not
mount or relabel any volumes in the devices. For more information, refer
to the Legato NetWorker Installation Guide, Microsoft Windows Version.
•
If you are using an autochanger with Removable Storage disabled:
a. Start a Windows command prompt and change to the
<NetWorker_install_path>\bin directory.
b. Create and configure the Autochanger resource using the
jbconfig command. Alternatively, you can use the NetWorker
Administrator device autodetection feature.
c. Run the nsrjb -vHE command from the command prompt. This
resets the autochanger, ejects backup volumes, reinitializes the
element status, and checks each slot for a volume. If the
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autochanger does not support the -E option (to reinitialize the
element status), use the sjiielm command to initialize the
element status.
d. If you need to determine which volume contains the bootstrap,
inventory the autochanger by running the nsrjb -Iv command
from the command prompt. If you know the slot number where
the bootstrap is located, use the nsrjb -Iv -S # command to
inventory that particular slot.
e. If the device the NetWorker server is to use is connected to a
remote storage node, the storage node device needs to be
configured. For details, refer to the Legato NetWorker Installation
Guide, Microsoft Windows Version.
•
If you are using an autochanger with Removable Storage enabled:
a. On the desktop, right-click My Computer and select Manage.
b. In the left pane of the Computer Management window, expand
Storage\Removable Storage\Physical Locations.
c. Right click the icon for the autochanger and select Inventory.
d. Minimize (but don’t close) the Computer Management window.
e. After the Removable Storage inventory is complete, start the
NetWorker Administrator program and select Devices on the
Configure tab.
4
f. In the Devices window, right-click the Devices icon and select
Create.
g. In the Create Devices dialog box, create a stand-alone NetWorker
Device resource for each drive in the autochanger.
h. In the Computer Management window, double-click the icon for
the autochanger (under Storage\Removable Storage\Physical
Locations). Icons for the autochanger’s volumes appear in the
right pane.
i. Right-click the icon for the volume that contains the bootstrap
and select Mount.
3. In the NetWorker Administrator program, configure the Client resource
for the NetWorker server. Set the browse and retention policies to a time
value that covers the oldest save sets being using for the recovery. This
allows you to recover all of the NetWorker server’s records with the
mmrecov command.
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Important: If the browse and retention policies are not long enough to cover
all of the save sets you use, all of the NetWorker server’s records are recovered,
but any records that are older than a month are discarded because the default
browse policy is one month.
4. If the NetWorker server’s client file index has not been relocated from its
original path, or if you are going to recover a relocated client file index
from a backup created with NetWorker release 7.x, skip this step and
proceed to “Task 3: Locate the NetWorker Server Bootstrap Save Set ID”
on page 70.
If you are going to recover the client file index from a backup created with
a NetWorker release earlier than 7.x, and you moved the NetWorker
server’s client file index path to a different location, you must:
a. Edit the Index Path attribute of the NetWorker server’s Client
resource to reflect the correct path.
b. Stop and restart the following NetWorker services:
4
–
NetWorker Backup and Recover Server
–
NetWorker Remote Exec Service
Task 3: Locate the NetWorker Server Bootstrap Save Set ID
If you already know the save set ID of the NetWorker server’s most recent
bootstrap, skip this task and go to “Task 4: Recover the NetWorker Server
Bootstrap” on page 72.
The bootstrap contains the NetWorker server’s media database and resource
configuration files, which are required for a NetWorker server recovery. For
more information about the bootstrap, see “Preparing for Disaster” on page 21.
There are two ways to determine the save set ID of the most recent bootstrap:
1. The faster way to determine the bootstrap save set ID is to find it in the
<NetWorker_install_path>\logs\savegrp.log file.
By default, the NetWorker server automatically creates a bootstrap save
set after each active scheduled backup that includes the server itself as a
client. NetWorker software sends a copy of the bootstrap information to
the default printer. You can also configure the NetWorker server to e-mail
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a copy of the bootstrap information after each scheduled backup. The
NetWorker server also writes the bootstrap information to the end of the
savegrp.log file that is written for the backup.
The following excerpt from a savegrp.log file shows a bootstrap save set ID
of 1467388673 located on volume lacey.001. Also note the file and record
numbers; having this information speeds the recovery process.
Jul 19 17:09:14 lacey: * lacey:bootstrap
date
time
level
ssid
07/19/01 05:08:50 PM full
1467388673
file
5
record
volume
0
lacey.001
2. If the bootstrap information is not available from the sources described
above, you can locate it by using the NetWorker scanner command, as
follows, although this can be time-consuming:
a. Insert the backup or clone volumes from the most recent scheduled
backups into the appropriate device. (Do not use the NetWorker
software to mount the media; the NetWorker server does not
currently have the necessary information to recognize the media.)
b. Start a Windows command prompt and change to the
<NetWorker_install_path>\bin directory.
c. If you are using an autochanger, load the first volume of the
bootstrap save set into the first drive of the autochanger by running:
nsrjb -lnv -S # -f device_name
where:
–
# is the slot where the first volume is located
–
device_name is the pathname for the first drive
You can obtain the device_name by running the NetWorker inquire
command.
d. To determine the save set ID of the most recent bootstrap use the
following command:
scanner -B device_name
where device_name is the pathname for the drive where the
appropriate volume is located (for example, \\.\Tape0)
Note: If you do not locate the save set ID of the bootstrap from the most recent
scheduled backup, run the scanner -B command on the volumes from the next
most recent scheduled backup to locate the save set ID of the next most recent
bootstrap.
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Task 4: Recover the NetWorker Server Bootstrap
In this task, you will recover the bootstrap save set. Recovering the bootstrap
overwrites the media database in the <NetWorker_install_path>\mm directory
and recovers the resource configuration files to a temporary directory named
<NetWorker_install_path>\res.R.
Note: The mmrecov command is used to recover only the media database and
resource configuration files. To recover the client file indexes (including the
NetWorker server’s own client file index) use the nsrck command. For details
about the mmrecov and nsrck commands, refer to the Legato Command
Reference Guide.
To recover the bootstrap save set:
1. Load the backup or clone volumes that contain the most recent bootstrap
save set. If you ran the scanner command in the previous task, you have
already completed this step; proceed to step 2.
If you did not run the scanner command in the previous task, do the
following:
a. Insert into the storage device the backup or clone volumes that
contain the most recent bootstrap save set. (Do not use the
NetWorker software to mount the volume; the NetWorker server
does not currently have the necessary information to recognize the
media.)
4
b. If you are using an autochanger, run the following command to load
the first volume of the bootstrap save set into the first drive of the
autochanger:
nsrjb -lnv -S # -f device_name
where:
–
# is the slot where the first volume is located
–
device_name is the pathname for the first drive
Note: You can obtain the device_name using the inquire command.
2. To recover the NetWorker server’s bootstrap, run the following command:
mmrecov
3. If you are using clone volumes and have not loaded all of the necessary
volumes, mmrecov prompts you for the original volume. In that case:
a. Enter [Ctrl]+[c] to exit mmrecov.
b. Delete the records of the original volumes by running the following
command:
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nsrmm -d volume_name
For example, if the NetWorker software requests the original volume
mars.1 but that volume is not available, run the following command to
delete mars.1 from the media database:
nsrmm -d mars.1
c. Restart the following NetWorker services:
–
NetWorker Backup and Recover Server
–
NetWorker Remote Exec Service
d. Run the mmrecov command to recover the bootstrap.
4. If the server has multiple devices configured and enabled, the following
message appears:
What is the name of the device you plan on using
[\\.\Tape1]?
If you receive this message, enter the name of the device you are using for
the recovery. For example, enter \\.\Tape0
5. When the following message appears, enter the save set ID for the latest
bootstrap. If you are recovering the bootstrap from a clone volume, enter
the save set ID associated with the clone.
Enter the latest bootstrap save set ID: 20076
6. When the following message appears, enter the file number to begin the
recovery (if known) or accept the default of zero.
Enter starting file number (if known) [0]: 130
7. When the following message appears, enter the first record number to
begin the recovery (if known) or accept the default of zero.
Enter starting record number (if known) [0]: 0
8. When the following message appears, ensure that the volume that
contains the correct save set is inserted into the correct backup device, then
press [Enter]:
Please insert the volume on which save set ID 20076 started
into \\.\Tape0. When you have done this, press <RETURN>:
9. Once the appropriate volume is loaded, the following message appears:
Scanning \\.\Tape0 for save set 20076; this may take a
while...
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The NetWorker software scans the volume for the appropriate save set
and then begins the recovery. The NetWorker nsrmmdbasm command is
used to recover the media database, and the uasm command is used to
recover the resource configuration files. You can use the NetWorker
Administrator program to monitor the recovery.
Note: The media database might not be on the same volume as the resource
configuration files. If this is the case, the recovery pauses and prompts you
when additional media is required.
Task 5: Rename the Resource Configuration Files
Because the NetWorker server’s resource configuration files cannot reliably be
overwritten while the NetWorker services are running, the mmrecov
command recovers the res directory as res.R.
To put the recovered resource configuration files into effect:
1. Stop the following NetWorker services on the NetWorker server:
4
•
NetWorker Backup and Recover Server
•
NetWorker Remote Exec Service
2. Copy the contents of the <NetWorker_install_path>\res.R directory to the
<NetWorker_install_path>\res directory.
3. Restart the NetWorker services.
Task 6: Reset and Inventory the Autochanger
If you are using a stand-alone storage device to perform the recovery, skip this
task and proceed to “Task 7: Recover the NetWorker Server’s Client File
Indexes” on page 76.
How to Reset and Inventory an Autochanger with Removable
Storage Disabled
To reset and inventory an autochanger with Removable Storage disabled:
1. Start a Windows command prompt and change to the directory that
contains the NetWorker binary files. The default location is
<NetWorker_install_path>\bin.
2. To reset the autochanger, eject volumes, reinitialize the element status,
and check each slot for a volume, run the following command:
nsrjb -vHE
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3. If you know which slots have changed configuration since the disaster,
inventory only those slots. For example, to inventory only slot 3, run the
following command:
nsrjb -Iv -S 3
If you do not know which slots have changed configuration since the
disaster, inventory all slots by running the following command:
nsrjb -Iv
Note: If the autochanger does not support the -E option of the nsrjb command
(to reinitialize the element status) use the sjiielm command to initialize the
element status. For more information about the nsrjb and sjiielm commands,
refer to the Legato Command Reference Guide.
How to Reset and Inventory an Autochanger with Removable
Storage Enabled
To reset and inventory an autochanger with Removable Storage enabled:
1. In the NetWorker Administrator program, select Autochanger from the
Configure tab.
4
2. In the Autochanger window, right-click the icon for the Removable
Storage jukebox and select Delete.
3. Start a Windows command prompt and change to the directory that
contains the NetWorker binary files. The default location is
<NetWorker_install_path>\bin.
4. At the Windows command prompt, run the jbconfig command to create
a new Removable Storage jukebox. Give the jukebox a temporary name;
you will delete it later in this procedure. In the following example, user
input is shown in bold.
1)
2)
3)
4)
5)
6)
Install
Install
Install
Install
Install
Install
a SmartMedia Jukebox.
an Autodetected SCSI Jukebox.
an Autodetected NDMP SCSI Jukebox.
an SJI Jukebox.
an STL Silo.
a Microsoft Removable Storage Jukebox.
What kind of Jukebox are you installing? [1] 6
Installing a Removable Storage Jukebox.
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The following Removable Storage libraries have been
detected:
1) scsidev@2.5.1: HP C1557A
2) scsidev@2.6.1: HP C1557A
Which one do you want to install? 1
Name you would like to assign to the jukebox? rsmtemp
Creating device \\.\Tape0...
Jukebox has been added successfully
Would you like to configure another jukebox? (yes/no) n
5. In the NetWorker Administrator Autochangers window, right-click the
icon for the Removable Storage jukebox and select Operations.
6. Right-click My Computer and select Manage.
7. In the left pane of the Computer Management window, expand
Storage\Removable Storage\Media Pools\Import and check the appropriate
type-specific media pool for NetWorker volumes.
8. On the Autochanger Operations dialog box, click Add Volume to
reallocate NetWorker volumes from the import pool to this jukebox.
Continue allocating until all of the NetWorker volumes belonging to the
library associated with this jukebox are moved from the Import pool to the
appropriate type-specific pool under Storage\Removable Storage\Media
Pools\Legato NetWorker.
4
9. In the Autochanger Operations dialog box, click the Reset button to reset
the Removable Storage jukebox.
10. In the Autochanger Operations dialog box, click the Inventory button to
inventory the contents of the Removable Storage jukebox.
Task 7: Recover the NetWorker Server’s Client File Indexes
After the NetWorker server’s bootstrap save set is recovered, you can recover
the client file indexes in any order; it is not necessary to recover the server’s
own client file index before recovering the index of any other client.
Important: If the clients have the NetWorker client software installed, you can
run manual and scheduled backups as soon as the NetWorker server bootstrap
is recovered. You can also recover complete save sets. You cannot, however,
browse a client’s save sets until you recover the client file index.
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To recover the client file indexes:
1. To recover the client file indexes, run one of the following commands from
the NetWorker server:
•
For all clients:
nsrck -L7
•
For a specific client:
nsrck -L7 client_name
2. If you are recovering the client file indexes from a clone volume, you may
be prompted to load the original volume. In that case:
a. Enter [Ctrl]+[c] to exit nsrck.
b. Delete the records of the original volumes by running the following
command:
nsrmm -d volume_name
For example, if the NetWorker software requests the original volume
mars.1 but that volume is not available, run the following command to
delete mars.1 from the media database:
nsrmm -d mars.1
4
c. Restart the following NetWorker services:
–
NetWorker Backup and Recover Server
–
NetWorker Remote Exec Service
d. Recover the client file indexes by running one of the following
commands from the command prompt:
•
For all clients:
nsrck -L7
•
For a specific client:
nsrck -L7 client_name
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Task 8: Recover the NetWorker Server Data
Important: Recovery of volume mount points and their data requires special
handling. It cannot be done using save set recovery. If you attempt to recover
a mount point and the mounted volume’s data in a single operation, the data
will be recovered to the root of the host volume and recovery of the mount
point will fail. To successfully recover the mounted volume’s data, you must
first manually recreate the mount point, using the same path as the original.
You can then perform a separate NetWorker file recovery to restore just the
mounted volume’s data (without including any of the host volume’s data in
the recovery).
For more information about backing up and recovering mount points, refer to
the Legato NetWorker Administrator’s Guide, Microsoft Windows Version. For
information about creating mount points, refer to the Windows Online Help
topics on creating mounted drives and using the Disk Management utility.
Note: This special handling is not required when performing ASR recovery.
4
To recover the remainder of the NetWorker server data:
1. Log on to Windows with local administrator privileges.
Note: Directed recovery of SYSTEM save sets is not supported. To recover
SYSTEM save sets, you must be logged on to the computer being recovered
with local administrator privileges.
2. If you are using an autochanger, make sure it has been inventoried. See
“Task 6: Reset and Inventory the Autochanger” on page 74. This ensures
that the NetWorker server can recognize the location of each volume.
3. If you load a clone volume, the NetWorker software uses the clone volume
for the remainder of the recovery process if either of the following is true:
•
The original volume was not added back into the media database.
•
The original volume was added back into the media database, but it
was not placed in an autochanger and inventoried.
However, if the original volume was added back into the media database,
placed in an autochanger, and inventoried, the NetWorker software
prompts you to mount the original volume.
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4. Ensure that all drives that contained system information prior to the
disaster are accessible. The system information includes the boot partition,
system partition, and the partition that contains the databases and
database logs for the system state components.
5. Start the NetWorker User program.
6. Click the Recover button.
7. In the Source Client dialog box, select the computer you are recovering
and click OK.
8. In the Destination Client dialog box, select the computer you are
recovering and click OK.
9. The computer’s directory structure appears in the Recover window.
10. Mark the following save sets for recovery. Ensure that the
<NetWorker_install_path> directory is included.
•
All local drives
•
SYSTEM FILES:
•
SYSTEM DB:
•
SYSTEM STATE:
4
Note: To avoid having to reboot twice, restore the SYSTEM STATE save set
last. If you recover all save sets in a single operation, the NetWorker User
program restores them in the correct order. If you recover save sets in multiple
NetWorker User operations, recover the SYSTEM STATE save set last.
The bootstrap and client file indexes are browsable for NetWorker releases
earlier than 6.0. If you are recovering a backup from a NetWorker release
earlier than 6.0 and you mark for recovery the drive that contains the
NetWorker installation directory (the default is %SystemDrive%\Program
Files\Legato\nsr) you must unmark the index, mm, res, and bin
subdirectories.
NetWorker software backs up user profiles in the save set that
corresponds to the disk drive on which they are located (for example, the
C: save set). To restore user profiles, restore the save set in which they were
saved. User profile folders are located in %SystemDrive%\Documents and
Settings.
11. Select Recover Options from the Option menu.
12. In the Recover Options dialog box, select Overwrite Existing File.
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If you do not select Overwrite Existing File, the recovery process pauses
before any existing files are overwritten, and a Naming Conflict dialog box
appears, prompting you to indicate how the NetWorker software should
resolve filename conflicts.
13. Click Start to begin the recovery.
Note: Files in the Windows Recycle Bin are not password protected. If the
Password Protection dialog box appears, you can select Recover > OK to
recover these files.
14. Check the log file to verify that no error messages were generated during
the recovery sessions. The NetWorker software logs information about the
recovery process to <NetWorker_install_path>\logs. The log is overwritten
each time a recovery is performed. If there are error messages in the log
file, you might need to run the recovery again after addressing the source
of the errors.
15. After recovery, reboot the computer to completely restore the
system-protected files and restart services that were automatically
stopped prior to recovery.
Note: By default, the directed recover option is enabled when you install the
NetWorker client. If the directed recover option was disabled on the client
before the disaster, you need to explicitly set this option to disable directed
recoveries to this client. This option is set through the nsradmin command. For
more information about setting the disable directed recover option on the
NetWorker client, refer to the Legato NetWorker Administrator’s Guide,
Windows Version.
4
Task 9: Restore the Removable Storage Jukebox Configuration
If you are using a stand-alone storage device or an autochanger with
Removable Storage disabled, skip this task and go to “Task 10: Verify the
NetWorker Server Recovery” on page 81.
To restore an autochanger with Removable Storage enabled:
1. Right-click My Computer and select Manage.
2. In the left pane of the Computer Management window, expand
Storage\Removable Storage\Physical Locations.
3. Double-click the icon for your autochanger. Icons for the autochanger’s
volumes appear in the right pane.
4. Right-click the icon for the volume that contains the bootstrap and select
Mount.
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5. Start a Windows command prompt and change to the
<NetWorker_install_path>\bin directory.
6. From the command prompt, run the following command to recover the
NetWorker server’s bootstrap:
mmrecov
7. Stop the following NetWorker services:
•
NetWorker Backup and Recover Server
•
NetWorker Remote Exec Service
8. Rename the <NetWorker_install_path>\res.R directory to
<NetWorker_install_path>\res.
9. Restart the NetWorker services.
10. On the Autochanger Operations dialog box, click Reset.
Task 10: Verify the NetWorker Server Recovery
To verify the NetWorker server recovery:
1. Reboot the NetWorker server host computer and verify that the
NetWorker Backup and Recover Server, NetWorker Power Monitor, and
NetWorker Remote Exec services are started.
2. Use the Windows Event Viewer to examine the event logs for errors. In
particular, check for:
•
Service startup errors related to the Windows system state
•
Errors regarding the recovery of Windows system-protected files
For information about how the NetWorker software handles the Windows
system state and system-protected files, refer to the Legato NetWorker
Administrator’s Guide, Microsoft Windows Version.
3. Verify that the NetWorker server and its associated clients are included in
a scheduled NetWorker backup.
4. Perform a test backup and restore.
5. Verify that any applications that were running prior to the disaster, such
as Microsoft Office, have been properly restored. To check this you can
start each application and open a file.
6. If the NetWorker server was previously configured as a domain controller,
verify that the drives configured to store the Active Directory database
and log files have been recovered.
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Recovering a NetWorker Client or Storage Node
Recovering a NetWorker Client or Storage Node
This section explains how to recover a Windows NetWorker client host
computer or a Windows .NET or Windows 2000 storage node host computer.
Notes:
•
For Windows .NET and Windows XP Professional systems, use the
following procedure only as a last resort for recovering a NetWorker
client or storage node. Instead, use the ASR recovery method if possible.
For more information, see “Performing Windows ASR Recovery” on page
53.
•
Before you begin the recovery procedures, identify all Legato products
(such as SmartMedia®, ClientPak®, and NetWorker Modules) and any
associated patches that were installed prior to the disaster. You must
reinstall any Legato backup software and patches that are unusable or
appear to be damaged. For more information, refer to the appropriate
product installation guide.
•
You can recover a NetWorker client or storage node to the original
computer, or to a different computer.
To recover the client or storage node, perform the following tasks in the
specified order:
4
•
“Task 1: Satisfy the NetWorker Client or Storage Node Recovery
Requirements” on page 83.
•
“Task 2: Reinstall the NetWorker Client or Storage Node Software” on
page 83.
•
“Task 3: Recover the NetWorker Client or Storage Node Data” on page 84
•
“Task 4: Verify the NetWorker Client or Storage Node Recovery” on page
86
Note: Before you begin recovery of a NetWorker client or storage node, you
should understand the information about SYSTEM save sets in the Legato
NetWorker Administrator’s Guide, Microsoft Windows Version.
Partial Recovery of a NetWorker Storage Node
In most cases, the NetWorker server should be fully functional before you
begin recovery of its associated clients or storage nodes. However, if the
storage device required for a NetWorker server recovery is connected to a
remote storage node, you might have to partially recover the storage node
before you can recover the NetWorker server. In that case:
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•
Install the NetWorker client or storage node software to provide a storage
device for the NetWorker server to use. For information, see “Task 2:
Reinstall the NetWorker Client or Storage Node Software” on page 83.
•
Recover the NetWorker server. For information, see “Recovering a
NetWorker Server” on page 66.
•
Perform the remaining tasks to recover the client or storage node. For
more information, see “Task 3: Recover the NetWorker Client or Storage
Node Data” on page 84 and “Task 4: Verify the NetWorker Client or
Storage Node Recovery” on page 86.
Task 1: Satisfy the NetWorker Client or Storage Node Recovery
Requirements
To recover a NetWorker client or storage node requires:
•
The same release and patch level of the NetWorker software that was in
use prior to the disaster
•
The installation path of the NetWorker software prior to the disaster.
•
Backup or clone volumes that contain the NetWorker client or storage
node’s data
Note: If you routinely move NetWorker backup media to an offsite location for
safekeeping, ensure that you have all necessary volumes available to avoid
delays during a recovery. You can run the mminfo -s server -mv command
from the command prompt to list the media associated with the files you
intend to recover. For details about the mminfo command, refer to the Legato
Command Reference Guide.
Task 2: Reinstall the NetWorker Client or Storage Node Software
If the NetWorker client or storage node software is not properly installed and
running on the host computer, you must reinstall it, as follows:
1. To install the NetWorker client or storage node software, refer to the
appropriate NetWorker installation guide.
•
If the NetWorker installation kit is available on a shared drive, you
can install it over the network.
•
Install the NetWorker software to the same path location it occupied
prior to the disaster.
•
To update the NetWorker software, first recover the NetWorker
client or storage node to its predisaster state, then perform the
update.
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Task 3: Recover the NetWorker Client or Storage Node Data
2. Install any NetWorker patches that were installed prior to the disaster.
3. Install the appropriate temporary enabler code for each Legato backup
product. For temporary enabler codes, refer to the product installation
guide.
4. If you are restoring a NetWorker storage node, ensure that the storage
devices the NetWorker server will use are correctly configured. For
details, refer to the appropriate NetWorker administrator’s guide.
5. From the NetWorker User program, perform a test recovery to verify that
the NetWorker recovery process is functioning properly.
Task 3: Recover the NetWorker Client or Storage Node Data
Important: Recovery of volume mount points and their data requires special
handling. It cannot be done using save set recovery. If you attempt to recover
a mount point and the mounted volume’s data in a single operation, the data
will be recovered to the root of the host volume and recovery of the mount
point will fail. To successfully recover the mounted volume’s data, you must
first manually recreate the mount point, using the same path as the original.
You can then perform a separate NetWorker file recovery to restore just the
mounted volume’s data (without including any of the host volume’s data in
the recovery).
4
For more information about backing up and recovering mount points, refer to
the Legato NetWorker Administrator’s Guide, Microsoft Windows Version. For
information about creating mount points, refer to the Windows Online Help
topics on creating mounted drives and using the Disk Management utility.
Note: This special handling is not required when performing ASR recovery.
To recover the NetWorker client or storage node data:
1. Log on to Windows with local administrator privileges.
Directed recovery of SYSTEM save sets is not supported. To recover
SYSTEM save sets, you must be logged on to the computer being restored
with local administrator privileges.
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2. Ensure that all drives that contained system information prior to the
disaster are accessible. The system information includes the boot partition,
system partition, and the partition that contains the databases and
database logs for the system state components.
3. Start the NetWorker User program.
4. Click the Recover button.
5. In the Source Client dialog box, select the computer you are recovering
and click OK.
6. In the Destination Client dialog box, select the computer you are
recovering and click OK.
7. The computer’s directory structure appears in the Recover window. Mark
all appropriate save sets for recovery:
Windows .NET, Windows XP Professional, and Windows 2000:
•
All local drives
•
SYSTEM STATE:
•
SYSTEM FILES:
•
SYSTEM DB:
•
SHAREPOINT: (for Windows 2000 SharePoint Portal Servers only)
Windows NT 4.0:
•
All local drives
•
SYSTEM STATE:
•
REPAIRDISK: (recover only if needed)
Note: To avoid having to reboot twice, restore the SYSTEM STATE save set is
last. If you recover all save sets in a single operation, the NetWorker User
program restores them in the correct order. If you recover save sets in multiple
NetWorker User operations, recover the SYSTEM STATE save set last.
Note: NetWorker software backs up user profiles in the save set that
corresponds to the disk drive on which they are located (for example, the C:
save set). To restore user profiles, restore the save set in which they were
saved. User profile folders are located in:
•
Windows .NET, Windows XP Professional, and Windows 2000 —
%SystemDrive%\Documents and Settings
•
Windows NT 4.0 — %SystemRoot%\profiles
8. Select Recover Options from the Option menu.
9. In the Recover Options dialog box, select Overwrite Existing File.
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Task 4: Verify the NetWorker Client or Storage Node Recovery
If you do not select Overwrite Existing File, the recovery process pauses
before any existing files are overwritten, and a Naming Conflict dialog box
appears, prompting you to indicate how the NetWorker software should
resolve filename conflicts.
10. Click Start to begin the recovery.
Note: Files in the Windows Recycle Bin are not password protected. If the
Password Protection dialog box appears, select Recover > OK to recover them.
11. Check the log file to verify that no error messages were generated during
the recovery sessions. The NetWorker software logs information about the
recovery process to the <NetWorker_install_path>\logs file. This file is
overwritten each time a recovery is performed. If there are error messages
in the log file, you might need to run the recovery again after addressing
the source of the errors.
12. After recovery, reboot the computer to completely restore the
system-protected files and restart services that were automatically
stopped prior to recovery.
Note: If you perform a complete reinstallation of the Windows operating
system during a disaster recovery, the display resolution will be set to default
values when the disaster recovery is complete. To reconfigure to the previous
display settings, use the Control Panel Display tool. This problem does not
occur if you perform an ASR recovery on a Windows .NET or Windows XP
Professional NetWorker client.
4
Note: By default, the directed recover option is enabled when you install the
NetWorker client. If the directed recover option was disabled on the client
before the disaster, you need to explicitly set this option to disable directed
recoveries to this client. This option is set through the nsradmin command. For
more information about setting the disable directed recover option on the
NetWorker client, refer to the Legato NetWorker Administrator’s Guide,
Windows Version.
Task 4: Verify the NetWorker Client or Storage Node Recovery
To verify the NetWorker client or storage node recovery:
1. Reboot the NetWorker client or storage node host computer and verify
that the NetWorker Remote Exec service has started.
2. Use the Windows Event Viewer to examine the event logs for errors. In
particular, check for:
•
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Service startup errors related to the Windows system state
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Errors regarding the recovery of Windows system-protected files
For information about how the NetWorker software handles the Windows
system state and system-protected files, refer to the Legato NetWorker
Administrator’s Guide, Microsoft Windows Version.
3. Ensure that the storage node and the NetWorker server can detect the
storage devices the NetWorker server is to use.
4. Perform a test recovery using each of the Legato backup products you
have installed. Recover data with the Legato product used to back it up.
Refer to the product documentation as necessary.
5. Perform a test backup to the NetWorker server to ensure that the
connection between the NetWorker client or storage node and the
NetWorker server is working properly.
6. Verify that any applications (such as Microsoft Office) that were running
prior to the disaster have been properly restored. To verify this, run each
application and open a previously saved document.
7. If you want to use Active Desktop, install it after you have recovered all of
the computer’s data.
8. If the NetWorker client or storage node computer was previously
configured as a domain controller:
4
Windows 2000 — Verify that the drives configured to store the Active
Directory database and log files have been recovered.
Windows NT 4.0 — If the computer is a Primary Domain Controller,
synchronize it with the domain. If the computer is a Backup Domain
Controller, synchronize it with the Primary Domain Controller.
Recovery of DHCP and WINS Databases
Microsoft does not provide an application program interface (API) for backup
and recovery of the DHCP and WINS databases. Therefore, these databases
are not included in the NetWorker SYSTEM DB save set. However, NetWorker
software can be configured to protect these databases.
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Recovery of DHCP and WINS Databases
Important: To recover the DHCP database, you must have a NetWorker
backup that includes the %SystemRoot%\System32\dhcp directory. To recover
the WINS database, you must have a NetWorker backup that includes a local
disk backup of the WINS database. For instructions on configuring DHCP and
WINS servers to include these databases in scheduled NetWorker backups,
refer to the Legato NetWorker Administrator’s Guide, Microsoft Windows Version.
Note: For Windows .NET, the DHCP and WINS databases are automatically
included in ASR backup and recovery; no special handling is required.
How to Recover a DHCP Database
To recover a DHCP database:
1. Using the NetWorker User program, recover the %SystemRoot%\
System32\dhcp directory on the DHCP server.
2. Using Microsoft DHCP administrative tools, restore the DHCP database.
For detailed instructions, refer the DHCP database restore procedures in
the Microsoft documentation.
4
How to Recover a WINS Database
To recover a WINS database:
1. Using the NetWorker User program, recover the backup of the WINS
database to a drive on the WINS server.
2. Using Microsoft WINS administrative tools, restore the WINS database.
For detailed instructions on using Microsoft WINS administrative tools,
refer to the Microsoft documentation.
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This chapter provides instructions on how to perform a disaster recovery on a
NetWare system using the NetWorker software.
Important: This chapter applies only to NetWorker clients and servers running
NetWorker release 4.2.x, NetWare version.
This chapter includes the following sections:
•
“Replacing a Hard Drive” on page 90
•
“Recovering the NetWare Operating System” on page 91
•
“Recovering a NetWare NetWorker Server” on page 94
•
“Recovering a Replicated NDS Partition” on page 102
Note: All of the utilities referenced in this chapter are NetWare console
utilities.
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Replacing a Hard Drive
Replacing a Hard Drive
To replace a hard drive:
•
“Obtain the Hard Drive Information” on page 90
•
“Replace the Hard Drive” on page 90
•
“Completing the Recovery Process” on page 91
Obtain the Hard Drive Information
Before you replace the hard drive, you must obtain the following information
about the drive:
•
Size of the drive
•
Size, format, and volume label assigned to each drive partition
•
NetWare Directory Services (NDS), the NDS tree topology, and the
location of server objects, partitions and replicas, and bindery context
settings
You can obtain information about each drive using:
5
•
install (or nwconfig on NetWare 5.0). This server utility provides
information about each hard drive including each volume segment on the
drive.
•
netadmin in DOS or the NetWorker Administrator program (nwadmin)
in Windows.
•
dsrepair. This server utility enables you to perform a check on each
partition and replica.
•
autoexec.ncf. This file contains the bindery context settings.
•
ndir. This workstation utility provides information about each volume,
directory, and file on the disk.
Replace the Hard Drive
For detailed instructions on how to replace failed hard drives, refer to the
appropriate NetWare documentation and the appropriate hard drive vendor
documentation.
Important: Install a new drive that is the same size or larger than the original
drive. This will ensure that you can recover all of the drive’s data.
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Important: Do not delete any volume objects from the NDS tree. This would
eliminate any references that other objects might have to a particular volume.
Completing the Recovery Process
To complete the recovery process after replacing the hard drive, see the
following sections:
•
“Recovering the NetWare Operating System” on page 91
•
“Recovering a NetWare NetWorker Server” on page 94
•
“Recovering a Replicated NDS Partition” on page 102
Note: To recover computer data using NetWorker software, refer to the Legato
NetWorker Administrator’s Guide, NetWare Version.
Recovering the NetWare Operating System
The following sections contain information about recovering the NetWare
operating system:
•
“Prerequisites” on page 91
•
“How to Recover the NetWare Operating System” on page 92
•
“Completing the Recovery Process” on page 94
5
Prerequisites
To recover the operating system, you need the following:
•
NetWare operating system, license software, patch level, and version
•
Version and patch level of the MS-DOS software
•
IPX/SPX and/or TCP/IP properties:
–
Adapter type
–
IPX network number or IP address
–
Default gateway
–
Subnet mask
–
DNS server
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Prerequisites
•
Computer properties:
–
Computer name
–
DNS domain name
–
Administrator name and password
•
Device and SCSI drivers
•
Startup files, including autoexec.bat, config.sys, autoexec.ncf, and startup.ncf
How to Recover the NetWare Operating System
This section describes how to recover the NetWare operating system using the
NetWorker software. Use this process to recover the NetWare operating
system back to the original computer, or to a different computer with the same
name.
You can recover the operating system by performing:
•
A complete installation using install or nwconfig. In this instance, you
perform a complete reinstallation and configuration of the operating
system.
•
Alternatively, perform a partial installation using install or nwconfig. In
this case, install and configure only those files that enable the computer to
communicate over the network. Then, recover the remaining operating
system and configuration files using the NetWorker software.
To recover the operating system, complete the following tasks:
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•
“Task 1: Install the Operating System” on page 92
•
“Task 2: Configure the Operating System” on page 93
•
“Task 3: Test the Operating System and Configure Devices” on page 94
Task 1: Install the Operating System
To install the operating system:
1. Install MS-DOS, including the AUTOEXEC.BAT and CONFIG.SYS files,
into its original location. For details, refer to the MS-DOS documentation.
2. Install the same version and patch level of NetWare using the install or
nwconfig program. Install NetWare into its original location with the
same:
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•
Version
•
Patch level
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Computer name
•
IPX network number and/or IP address
For details, refer to the NetWare documentation.
If you want to upgrade NetWare, first restore the operating system to its
original state, and then perform the upgrade.
3. Install NDS into its original location using the install or nwconfig utility:
•
Use the same name as the original tree.
•
Use the same server name.
•
Use the same container and Administrator name.
•
Ensure the Administrator object resides at the same level, in the same
container, as it did in the original tree.
For details, refer to the NetWare documentation.
Important: If this server will become the master of the NDS Root partition,
during installation, make sure you re-create the Organization object using the
same name. If the Organization object does not have the same name, the
subtree will contain new empty containers.
Task 2: Configure the Operating System
To configure the operating system:
1. Configure the IPX/SPX and TCP/IP properties exactly as they were
configured before. If you do not, the NetWorker software will assign the
computer a new host ID. If the computer has a different host ID, you must
reregister the NetWorker software. For details, refer to the Legato
NetWorker Installation Guide, NetWare Version.
2. If you are recovering to a new computer, assign the same hostname for the
new computer. If you do not use the same hostname, you will not be able
to recover the NetWorker indexes associated with the original computer.
3. Configure the date and time properties as they were configured before.
4. If you had any additional NetWare components or services, reinstall them
before recovering the computer’s data.
5. Restart the computer after installing the NetWare operating system.
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Completing the Recovery Process
Task 3: Test the Operating System and Configure Devices
To test the operating system and configure the devices:
1. Configure any devices the NetWorker software requires. For example,
SCSI pass-through devices for autochangers.
2. Perform a test to verify that the:
•
Name to Address resolution is correct. Test by running nslookup
using the Fully Qualified Domain Name of the NetWare NetWorker
backup server, client, or storage node.
•
Network protocols are functioning properly.
•
Operating system is functioning properly.
•
Time synchronization is functioning properly.
•
The operating system recognizes the devices. If the operating system
does not recognize the devices, you might need to:
–
Modify the device configuration files to enable the computer to
communicate with the device during recovery.
–
Load the SCSI driver and its associated ASPI driver.
–
Install the device driver.
Completing the Recovery Process
To complete the recovery process after installing and configuring the
operating system, use the following procedures, depending on the type of
NetWorker computer you are recovering:
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•
“Recovering a NetWare NetWorker Server” on page 94
•
“Recovering a Replicated NDS Partition” on page 102
Note: To recover computer data using the NetWorker software, refer to the
Legato NetWorker Administrator’s Guide, NetWare Version.
Recovering a NetWare NetWorker Server
The following sections provide information on recovering a NetWorker
server:
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•
“Prerequisites” on page 95
•
“How to Recover a NetWare NetWorker Server” on page 95
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Prerequisites
To recover the NetWorker server, you need the following:
•
Original version and patch level of NetWorker software
•
Original location of NetWorker software
•
Backup or clone volumes containing the:
–
NetWorker server media manager. By default, this directory is
located in the SYS:NSR\MM directory.
Important: Do not attempt to recover the legatomm file manually. Recover this
file using the NetWorker Utilities Recover from a Disaster option.
–
NetWorker server indexes. By default, this directory is located in the
SYS:NSR\INDEX\<server_name> directory.
–
NetWorker server configuration files. By default, this directory is
located in the SYS:NSR\RES directory.
How to Recover a NetWare NetWorker Server
To recover a NetWorker server, complete the following tasks:
•
“Task 1: Install the NetWorker Software” on page 96
•
“Task 2: Configure NetWorker Device and Client Resource” on page 96
•
“Task 3: Locate the Server’s Bootstrap Save Set ID” on page 97
•
“Task 4: Recover the NetWorker Server Bootstrap” on page 97
•
“Task 5: Rename the NetWorker Server Configuration Files” on page 99
•
“Task 6: Recover the NetWorker Server Data” on page 99
•
“Task 7: Restore NDS Data” on page 100
•
“Task 8: Complete the Server Recovery” on page 101
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Task 1: Install the NetWorker Software
To install the NetWorker software:
1. Install the same version of NetWorker software into its original location.
For installation instructions, refer to the Legato NetWorker Installation
Guide, NetWare Version.
•
If you want to upgrade the NetWorker server, first recover the server
to its original state, and then perform the upgrade.
•
You do not need to reload the license enablers if the NetWorker
configuration files still exist. By default, the configuration files are
located in the SYS:NSR\RES directory.
2. Install any NetWorker patches that were installed prior to the disaster.
Task 2: Configure NetWorker Device and Client Resource
To configure the device and client resource:
1. Configure the Device resource:
Note: If you are recovering data using an autochanger, enter [F4] to verify that
the autochanger correctly appears in the Autochanger window.
2. Configure the Client resource associated with the server.
Set the browse and retention policies to a decade. The browse policy is one
quarter (four months) by default. This enables you to recover all of the
server’s records.
5
Important: If you do not reset the browse and retention policies, all of the
server’s records will be recovered. However, any records that are more than
one quarter (four months) old will be discarded, because the browse policy is
one quarter by default.
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Task 3: Locate the Server’s Bootstrap Save Set ID
This section describes how to locate the save set ID for the NetWorker server’s
latest bootstrap. The NetWorker server’s bootstrap contains the server’s online
file index, media index, and resource configuration files.
Use the following steps to locate the save set ID of the most recent bootstrap if
you do not have this information:
1. Insert the most recent media or clone volumes used for scheduled backups
into the appropriate device.
2. At the NetWare system console, switch to the directory where the
NetWorker NLMs are located. By default, these files are located in the
SYS:NSR\BIN directory.
3. Use the scanner -B command to locate the most recent bootstrap on the
media.
Task 4: Recover the NetWorker Server Bootstrap
This section describes how to recover the NetWorker server’s bootstrap. By
default, these files reside in the SYS:NSR and SYS:NSR\RES directories, and
can be recovered using the NetWorker Utilities program.
To recover the NetWorker bootstrap:
1. Load and inventory the devices. This ensures that the NetWorker software
can recognize which slots contain which volumes.
If you load a clone volume into a device, the NetWorker software will use
the clone volume for the remainder of the recovery process. You might
have to update the volume location to indicate that the original volume is
not available.
2. Start the NetWorker Utilities program by entering the following
command at the NetWare system console:
load NETUTIL
Important: Disable scheduled backups and do not use the NetWorker software
to perform backups or recoveries while running the NetWorker Utilities
program. If backup and recovery processes are enabled, the state of the
NetWorker indexes will become confused. From the NetWorker Utilities
dialog box, select Recover from a Disaster.
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3. Enter the full name of the backup administrator (for example,
“.cn=Admin.O= ‘top level container’”) into the User text box and the
appropriate NetWare password into the Password text box and press
[Enter].
The Device Selection window appears.
4. From the Device Selection window, select the device you intend to use and
press [Enter].
5. Insert the most recent media or clone volumes used for scheduled backups
into the appropriate device.
•
If you are using a single tape device, manually insert the volume.
•
If you are using an autochanger, use the autochanger controls to
manually select the slot containing the most recent backup volume.
To determine the required backup volume, refer to the printed bootstrap
records.
6. Press [Enter] when the following message appears.
Put the volume for disaster recovery in device xxxx and
press Enter.
7. Press [Enter] to exit the NetWorker Utilities. The server’s processor will
halt with multiple ABENDs.
8. Restart the NetWorker software.
9. From the NetWorker Utilities program, select F3>Operation>Recover.
5
10. Browse and mark the following files for recovery:
•
SYS:NSR\NSR.RES
•
SYS:NSR\NSRJB.RES
11. Press [F2] to start the recovery. When messages indicating name conflicts
appear, select Rename the Recover File for both files.
12. When recovery is complete, exit the NetWorker Utilities program.
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Task 5: Rename the NetWorker Server Configuration Files
To rename the configuration files:
1. Unload all of the associated NLM files using nwdown.
2. Delete the existing files (NSR.RES and NSRJB.RES).
3. Rename the recovered files, which were renamed with a tilde (~) upon
restore, to NSR.RES and NRJB.RES.
4. Restart the NetWorker software. This process restores the NetWorker
software to its last backup configuration, including passwords,
administrator privileges, backup groups, and schedules.
5. Verify that the NetWorker indexes and configuration files are restored. If
they are not restored, select Recover from a Disaster from the NetWorker
Utilities program, or use an older volume.
Task 6: Recover the NetWorker Server Data
To recover the remainder of the server’s data using the NetWorker Utilities
program:
To recover the NetWorker server data:
1. Insert the most recent backup or clone volumes into the device.
2. From the Mount dialog box, select the required volume.
Notice that the volume is now marked (R); this means the volume is write
protected.
3. From the [F3] Operation menu, select Recover to display the Client List
window.
4. Select the client with the NetWare server name and press [Enter].
Another login window appears.
5. Enter the full name of the backup administrator (for example,
“.cn=Admin.O= ‘top level container’”) into the User attribute and the
appropriate NetWare password into the Password attribute and press
[Enter].
The Browser window appears.
6. Select Schema and mark it for recover to recover all extensions to the NDS
schema.
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7. From the [F2] File menu, select Start Recover, and press [Enter].
8. If you have NDS data to restore, continue with “Task 7: Restore NDS Data”
on page 100.
If you do not have any NDS data to restore, continue with “Task 8:
Complete the Server Recovery” on page 101.
Task 7: Restore NDS Data
Before performing an NDS backup or recover, refer to the Novell Application
Notes section “Backing Up and Restoring Novell Directory Services in
NetWare 4.11,” dated October 1996. This document explains concepts and
procedures that you need to understand before working with NDS backups
and recovers.
On networks with multiple servers, NDS automatically creates replicas
(copies) of the NDS database or portions of it (partitions) and stores them on
other servers. This process provides a readily available backup if NDS or a
partition is damaged. Do not circumvent this replication process.
Whenever possible, use an active replica to restore what was lost from the
NDS tree. If this is not feasible, you must restore from a Storage Management
Services (SMS) backup in the following way:
1. Restore the NDS information.
2. Restore the filesystem data and trustee rights.
NDS backup and restore is based on object names. The objects must exist
in the tree before you can restore the filesystem data and trustee
assignments for those objects. NDS should be functional (time and
partitions synchronizing normally) before you proceed with a restoration.
5
To restore NDS data to this server using the NetWorker software:
a. From the [F3] Operation menu, select Save Set Recover, and press
[Enter].
b. Select this server’s name as both the source and destination client.
c. Enter the full name of the backup administrator, and the password.
d. Select the {NDS} save set, and press [Enter] to display versions.
e. Select the version with the most recent full backup.
If there are any later save sets with level 1 or incremental backups, recover
them from the oldest to the most recent.
The NDS is now restored to the state of the most recent backup.
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Task 8: Complete the Server Recovery
To complete the recovery of the server:
1. Use NetWorker software to recover the remaining data, including the
client file indexes. In the Browser window, mark everything for recovery,
and then unmark all still-operational volumes, LEGATOMM, the server’s
LEGATODB, NSR.RES, NSRJB.RES, Schema, and NDS.
Important: Recover each client file index by selecting the client folder from the
indexes directory. Each client has a legatodb file that is located in
SYS:NSR\INDEX\CLIENT-NAME.
If you run out of memory while recovering multiple files, recover one
volume at a time.
2. From the [F2] File menu in the Browser window, display the NetWorker
Recover Options dialog box. Select Don’t Overwrite Data.
3. Verify the recovered data. From a workstation, use the ndir command or
NetWare Administrator (NWAdmin) to check the data, trustee
assignments, file ownership, and other related information.
4. Select Cross-Check Index from the Indexes dialog box of the NetWorker
Administrator program to compare the index records to the records in the
media index.
5
5. Perform a check to make sure the server is fully recovered:
•
Verify that the server and its associated clients are included in a
scheduled backup.
•
Run dsrepair to verify the integrity of any NDS databases.
•
Use the NetWorker Administrator program or the ndir workstation
utility to verify the data, trustee assignments, and file ownership.
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Recovering a Replicated NDS Partition
Recovering a Replicated NDS Partition
If the NetWare server did not contain an NDS partition (replicated or not), do
not complete this section. Instead, complete only “Recovering the NetWare
Operating System” on page 91 and “Recovering a NetWare NetWorker Server”
on page 94.
This section contains the following information on recovering a replicated
NDS partition over the network:
•
“How to Recover a NetWare 4.10 SYS Volume” on page 102
•
“How to Recover a NetWare 4.11, NetWare 5.0, or IntraNetWare Server
SYS Volume” on page 105
Important: For NetWare 4.11/IntraNetWare servers, do not delete the server
or volume objects for the failed volume from the NDS tree; you do not want to
eliminate any references other objects might have to the volume. If you must
delete objects on a NetWare 4.11/IntraNetWare server, use the NetWare 4.10
procedure for recovering from a disaster.
How to Recover a NetWare 4.10 SYS Volume
To recover a SYS volume on a NetWare 4.10 server, complete the following
tasks:
5
•
“Task 1: Recover the NetWare 4.10 SYS Volume” on page 102
•
“Task 2: Restore the SMS Remote File System” on page 104
•
“Task 3: Complete the Recovery of the NetWare 4.10 SYS Volume” on
page 105
Task 1: Recover the NetWare 4.10 SYS Volume
To recover a SYS volume on a NetWare 4.10 server:
1. Use the NetWorker Administrator program or netadmin to delete the
volume objects associated with the failed server.
2. Use NDS Manager or partmgr to delete the server object for the failed
server. You cannot use netadmin to delete a server object.
Partition Manager displays a warning message; enter Yes to confirm the
deletion.
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3. Use NDS Manager or dsrepair to check the replica synchronization.
If you see error messages, wait a few minutes and try again.
4. From the NetWorker server, perform a directed recover to restore the
failed server’s Server Specific Info (SSI) files from a tape backup to a
functioning NetWorker for NetWare client.
The server-specific information files (SERVDATA.NDS, VOLSINFO.TXT,
STARTUP.NCF, and AUTOEXEC.NCF) are restored to a subdirectory
under SYS:\SYSTEM on the server you selected. This subdirectory is
given a DOS 8.3 name derived from the source server name.
5. If the failed server held a master replica, use NDS Manager or dsrepair to
designate a new master replica on a different server in the replica ring.
6. Use NDS Manager or dsrepair to perform an unattended full repair to
check replica synchronization. If necessary, use NDS Manager or dsrepair
on the servers containing master replicas to remove the failed server from
the replica ring.
7. Shut down the failed server and replace any damaged server hardware. If
you replace a hard drive, be sure that it is the same size or larger.
8. Format the DOS partitions and reinstall DOS.
Important: Use the DOS Time command to ensure that the computer is set to
the correct time to avoid time synchronization errors.
5
9. Reinstall NetWare 4.10 and NDS on the repaired or replaced server. Run
install or nwconfig, select Custom Install, and follow the directions on the
screen. Use the STARTUP.NCF and AUTOEXEC.NCF files recovered with
SSI to answer the questions displayed on the screen.
–
Enter the same server name and internal IPX number that the server
had prior to the disaster.
–
When prompted, insert the NetWare License diskette for the server
into the disk drive.
–
When prompted for the name of the NDS tree, select the name of the
tree that the server resided in before the disaster.
–
Select the time zone and configure the time.
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–
Log in and specify the context for the server and its objects. Use the
same context used before the disaster.
–
Edit the STARTUP.NCF and AUTOEXEC.NCF files to match the
versions recovered with SSI.
When the installation is complete, the server will contain all the files
necessary to perform an SMS remote filesystem restore. For more
information, see “Task 2: Restore the SMS Remote File System” on page
104.
Task 2: Restore the SMS Remote File System
To restore the SMS remote filesystem to a SYS volume on a NetWare 4.10
server:
1. Load the required name space modules for each restored volume. Use the
VOLSINFO.TXT file to determine which name spaces need to be loaded
(MAC.NAM, LONG.NAM, etc.).
2. Load the filesystem TSA specific to your version of the NetWare operating
system, by entering one of the following commands:
LOAD TSA410
LOAD TSA312
LOAD TSA500
3. Recover the filesystem for each volume affected by the failure. Do not
recover the Schema and [Root]; they are restored from a replica. You also
do not need to recover Server Specific Info again. When prompted,
suppress further prompting and overwrite files.
5
4. When you are prompted, log in using the full name of the backup user.
5. If the failed server had non-SYS volumes that were not affected by the
failure, from the [F2] File menu in the Browser window, select Recover to
display the NetWorker Recover Options dialog box. Select the Don’t
Overwrite Data; restore trustees, etc. command, and then recover the
volumes that were not affected by the failure.
6. Shut down and restart the repaired or replaced server.
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Task 3: Complete the Recovery of the NetWare 4.10 SYS Volume
To complete the recovery of a NetWare 4.10 SYS volume:
1. If necessary, use NDS Manager or dsrepair to re-establish replicas on the
repaired or replaced server.
2. Enter the following commands at the command prompt:
LOAD TSA410
LOAD TSANDS
LOAD TSA500
3. From the Recover Browser window, recover the server object, volume
objects, and any objects that formerly referenced the recovered volume or
server objects. Expand the [Root] resource, mark the required objects, and
then select Recover. When prompted, suppress further prompting and
overwrite files.
4. Use NDS Manager or the Schedule immediate synchronization function of
dsrepair to synchronize the replica on all servers.
5. Verify the recovered data. From a workstation, use either the nwadmin
server utility or the ndir workstation utility to check the data, trustee
assignments, file ownership, and other related information.
The SYS volume should now be restored.
How to Recover a NetWare 4.11, NetWare 5.0, or IntraNetWare Server
SYS Volume
5
To recover a SYS volume on a NetWare 4.11, NetWare 5.0, or IntraNetWare
server, complete the following tasks:
•
“Task 1: Recover the NetWare SYS Volume” on page 106
•
“Task 2: Install the Operating Systems” on page 107
•
“Task 3: Complete the NetWare SYS Volume Recovery” on page 108
Important: For NetWare 4.11/IntraNetWare servers, do not delete the server
or volume objects for the failed volume from the NDS tree; you do not want to
eliminate any references other objects might have to the volume. If you must
delete objects on a NetWare 4.11/IntraNetWare server, use the NetWare 4.10
procedure for recovering from a disaster.
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Task 1: Recover the NetWare SYS Volume
To recover a NetWare 4.11 or IntraNetWare SYS volume:
To recover a SYS volume:
1. From the NetWorker server, perform a directed recover to restore the
failed server’s Server Specific Info (SSI) files from a tape backup to a
functioning NetWorker for NetWare client.
The server-specific information files (SERVDATA.NDS, DSMISC.LOG,
VOLSINFO.TXT, STARTUP.NCF, and AUTOEXEC.NCF) are restored to a
subdirectory under SYS:\SYSTEM on the client you have selected. This
subdirectory is given a DOS 8.3 name derived from the source server
name.
Important: For NetWare 4.11/IntraNetWare servers, do not delete the server
or volume objects for the failed server from the NDS tree. You do not want to
eliminate any references other objects might have to the server. If objects were
deleted from the NDS tree, use the NetWare 4.10 procedure for recovering
from a disaster.
2. If the failed server held a master replica, use NDS Manager or dsrepair to
designate a new master replica on a different server in the replica ring. To
determine which replicas were stored on the failed server, refer to
DSMISC.LOG.
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3. If the failed server also contained any nonmaster replicas, use NDS
Manager or dsrepair on the servers containing master replicas to remove
the failed server from the replica ring.
A NetWare warning message appears. Continue with the recovery
procedure. For more information, refer to “Backing Up and Restoring
Novell Directory Services in NetWare 4.11” in Novell Application Notes,
October 1996.
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4. Use dsrepair to perform an unattended full repair to ensure the ring is
functioning properly.
Refer to DSMISC.LOG to determine which replicas were stored on the
failed server. If DSMISC.LOG shows that no other server has exactly the
same replicas as the failed server, run dsrepair on any servers containing
replicas of partitions on the failed server.
5. Shut down the failed server and replace any damaged hardware. If you
need to replace a hard drive, install a drive that is the same size or larger.
Task 2: Install the Operating Systems
To install the operating systems:
1. Format the DOS partitions and reinstall DOS.
Important: Use the DOS Time command to ensure that the computer is set to
the correct time to avoid time synchronization errors.
2. Reinstall NetWare 4.11, NetWare 5.0, or IntraNetWare and NDS on the
repaired or replaced server. Run install or nwconfig, select Custom
Install, and follow the directions on the screen.
a. When prompted, enter the same server name and internal IPX
number that the server had prior to the failure. Use the
STARTUP.NCF and AUTOEXEC.NCF files included with the
server-specific information for needed information.
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b. After the preliminary files are copied, the Choose a Directory Tree
dialog box appears. Press [F5] to restore NDS (option listed at the
bottom right of the screen).
c. A new window displays two options: A: (the default) or Press [F3] to
specify a different path. If the Server Specific Info files are contained on
diskette, insert the diskette into drive A and press [Enter]. Otherwise,
press [F3] and enter the path to the Server Specific Info files restored in
step 1.
d. A Remote Server Authentication login dialog box is displayed. Log
in. When prompted, enter the Directory tree name.
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e. Press [Enter], and both the files and NDS are copied to the new
server. DSMISC.LOG, VOLSINFO.TXT, and AUTOEXEC.NCF are
copied to the SYS:SYSTEM directory. STARTUP.NCF is copied to the
C:\NWSERVER directory.
f. The NDS restoration uses the information from SERVDATA.NDS
(TSANDS.NLM is not needed). NDS is now fully functional on the
server, but the partitions and replicas must still be reestablished.
g. When prompted, insert the NetWare License diskette for the server
into the diskette drive.
h. Edit the STARTUP.NCF and AUTOEXEC.NCF files.
i. If either the STARTUP.NCF or the AUTOEXEC.NCF files have
changed because they were backed up with the server-specific
information, both the original and the new files are displayed for you
to compare and make edits as necessary. If the current files are the
same as the original files, only the current files are displayed.
The server now contains all the files necessary to perform an SMS remote
filesystem restore.
3. To finish the installation:
5
•
Press Enter to exit the utility. NetWare will not copy the remaining
system and public files but will exit the utility. These files should be
recovered from a backup.
•
Alternatively, press F3 to Continue installation and wait while the
utility copies the remaining system and public files. Then exit.
Task 3: Complete the NetWare SYS Volume Recovery
This section describes how to complete the recovery of the 4.11 SYS volume.
To complete the recovery of the 4.11 SYS volume:
1. Load the required name space modules for each restored volume. Use the
VOLSINFO.TXT file to determine which name spaces need to be loaded
(MAC.NAM, OS2.NAM, and so on).
2. Load the filesystem TSA specific to your version of NetWare by entering
one of the following commands on the repaired or replaced server:
LOAD TSA410
LOAD TSA500
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3. Recover the filesystem for each volume affected by the failure. Do not
recover the Schema and [Root]; they will be restored from a replica. You
also do not need to recover Server Specific Info again. When prompted,
suppress further prompting and overwrite files.
If the failed server had non-SYS volumes that were not affected by the
failure, no further action is needed because the SERVDATA.NDS file
preserves the trustee assignments on these other volumes.
4. Shut down and restart the server.
5. Use NDS Manager or dsrepair to re-establish replicas on the failed server.
Use DSMISC.LOG to view a copy of the replica list that resided on the
server at the time of backup.
6. Verify the recovered data. From a workstation, use NWAdmin32 or the
rights /T /S and ndir commands to check the data, trustee assignments, file
ownership, and other related information.
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Chapter 6: Microsoft Cluster Disaster Recovery
(Windows NT 4.0)
This chapter describes how to recover one or more computers in a Windows
NT 4.0 cluster.
This chapter includes the following sections:
•
“Recovering One Node in a Cluster” on page 111
•
“Recovering a Cluster Shared Disk” on page 113
•
“Replacing the Quorum Disk and Recovering Its Data” on page 116
•
“Recovering the MSCS Cluster Configuration” on page 117
•
“Performing a Cluster-Wide Recovery” on page 119
Important: To ensure proper termination, never power off any node in the
cluster unless it is connected with a Y cable.
Recovering One Node in a Cluster
Note: In the example used for the following tasks, Node_A is still working and
Node_B has failed.
To recover a failed node within a cluster, perform the following tasks:
•
“Task 1: Evict Node_B from the Cluster” on page 112
•
“Task 2: Reinstall Windows NT 4.0 and MSCS on Node_B” on page 112
•
“Task 3: Reinstall the NetWorker Software” on page 113
•
“Task 4: Recover the Data on Node_B” on page 113
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Task 1: Evict Node_B from the Cluster
Task 1: Evict Node_B from the Cluster
To evict Node_B from the cluster:
1. Ensure that the cluster resources failed over to Node_A, the working node.
This includes the quorum disk and any shared disks.
2. If any of the data that failed over from Node_B to Node_A is corrupt, use
the NetWorker software to recover the data.
Note: You may need to shut down some cluster resources that depend on
this data.
3. From the Cluster Administrator on Node_A, evict Node_B from the
cluster.
4. Shut down Node_B if it is still running and disconnect it from the cluster.
5. Fix or replace the damaged hardware on Node_B, if necessary.
6. Reconnect Node_B to the cluster.
Task 2: Reinstall Windows NT 4.0 and MSCS on Node_B
To reinstall Windows NT and MSCS on Node_B:
1. Install the Windows NT 4.0 Server Enterprise Edition.
2. Apply Windows NT 4.0 service pack 3.
3. Install the MSCS software.
4. If the node had a local tape drive, install the device driver.
5. Install the latest Windows NT 4.0 service pack.
6. Join Node_B to the cluster with Node_A.
7. Assign the same drive letters that were previously assigned to the disk
volumes.
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Important: Any local drive letters you assign should not conflict with the drive
letters assigned to any of the shared disks.
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Task 3: Reinstall the NetWorker Software
To reinstall the NetWorker software, on Node_B:
1. Log on to the same domain as Node_A.
2. Install the NetWorker software. For instructions, refer to the Legato
NetWorker Installation Guide, Microsoft Windows Version.
Task 4: Recover the Data on Node_B
To recover the data on Node_B:
1. Recover all the hives in the registry or system state.
2. Use NetWorker to recover any data that is local only to Node_B.
3. Restart Node_B.
4. Verify that the cluster is working properly.
Recovering a Cluster Shared Disk
This section describes how to recover data from a cluster shared disk that is not
a quorum disk.
To recover a cluster shared disk, perform the following tasks:
•
“Task 1: Take the Dependent Resources Offline” on page 113
•
“Task 2: Replace the Hard Drive” on page 114
•
“Task 3: Recover the Data to the Shared Disk” on page 115
•
“Task 4: Configure the Cluster to Include the Shared Disk” on page 115
Task 1: Take the Dependent Resources Offline
Note: The following procedure outlines the required steps for taking the
dependent resources offline. For detailed instructions, refer to the Microsoft
Cluster Server documentation.
To take offline all of the resources that are dependent on the shared drive that
you are replacing:
1. In the Cluster Administrator program, create a new resource group.
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Task 2: Replace the Hard Drive
2. If the current shared disk’s resource group contains the shared disk and its
dependent resources, move the cluster resources that represent the
affected shared disk into the resource group you created in the previous
step.
3. Take offline the resource group that contains the shared disk.
Note: You do not need to create a new resource group if the shared disk’s
resource group only contains resources that depend on it.
Task 2: Replace the Hard Drive
For more information, refer to the Microsoft Cluster Server documentation.
To replace the hard drive:
1. Using the Control Panel Services tool, set the Startup Type of the Cluster
Service to Manual.
2. In the Cluster Administrator program, open the Property window for each
resource in the resource group. Select the Do Not Restart property from the
Advanced window.
3. Remove the shared disk from the dependency list of any resources that
depend on the shared disk.
Important: If you fail to perform this step, you may not be able to delete the
disk resource in the following step.
4. Delete the cluster resource that represents the shared disk.
5. If required, shut down the nodes.
Note: Refer to the MSCS Cluster Hardware Manual to determine whether
you must shut down the nodes before you replace the shared disk.
6
6. Remove the shared disk and replace it with a new shared disk.
7. If you have shut down the nodes, reboot them.
8. Create the drive volumes and format the new disk as the old one was.
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Task 3: Recover the Data to the Shared Disk
To recover the data that belongs to the shared disk:
1. Ensure that the NetWorker software is properly installed. For details, refer
to the Legato NetWorker Installation Guide, Microsoft Windows Version.
2. Using the NetWorker User program, recover all the data that belongs to
the shared disk.
Note: If the resource group is a virtual server, you may need to perform a
directed recovery. For details, refer to the Legato NetWorker Administrator’s
Guide, Microsoft Windows Version.
Task 4: Configure the Cluster to Include the Shared Disk
For more information, refer to the Microsoft Cluster Server documentation.
To configure the cluster to include the shared disk:
1. Using the Control Panel Services tool, start the Cluster Service if it was
previously stopped.
2. In the Cluster Administrator program, create a new cluster resource to
represent the new disk.
3. Add the cluster resource to the resource group you created in “Task 1: Take
the Dependent Resources Offline” on page 113.
If you did not create a new resource group Task 1, add the resource to the
resource group where it was before the replacement.
4. Add the shared disk to the dependency list of all the cluster resources that
depend on this resource.
5. Start the resource group that contains the shared disk.
6. If you created a new resource group:
a. Move the disk resource and all dependant resources to their original
resource group.
b. Delete the now-empty resource group.
7. Ensure that the Startup Type of the Cluster Service is set to Automatic.
8. Ensure that the resource group property is set to Do Not Restart. In most
situations, it is unselected.
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Replacing the Quorum Disk and Recovering Its Data
Replacing the Quorum Disk and Recovering Its Data
This section provides information about the quorum resource and explains
how to recover a quorum disk’s data.
About the Quorum Resource
If there is a communication failure between the nodes, the MSCS software uses
the quorum resource in an arbitration process to determine the members of the
cluster nodes. The quorum resource also records changes made to the cluster
database when one of the nodes in the cluster is down.
Refer to the Microsoft Cluster Server documentation for detailed information
on how to:
•
Locate the quorum disk
•
Locate the quorum data directory
•
Change the quorum disk designation
Recovering the cluster configuration data on the quorum disk is important
during a disaster recovery. Recovery of the quorum resource information is not
automatic.
If the quorum disk is owned by a virtual server, configure the virtual server as
a NetWorker client. For the client’s Save Set attribute, specify one of the
following:
•
All
•
The disk volume or directory that contains the quorum data
If the quorum disk is not owned by a virtual server, configure all the nodes as
NetWorker clients. For the Save Set attributes, specify one of the following:
6
•
All (this is preferred)
•
The disk volume or directory that contains the quorum data
Note: The quorum disk is accessible from only one node at a time. Therefore,
the backup will fail over to the node that does not have access to the quorum
disk. This is why specifying save set All is preferred over specifying the disk
volume or directory that contains the quorum data.
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How to Replace the Quorum Disk and Recover Its Data
To recover the quorum disk’s data:
1. Take offline any cluster resources or applications that depend on the
quorum disk’s data.
Important: Do not take the Cluster Service offline.
2. Change the quorum disk’s drive letter and replace the quorum disk with
a new disk.
Note: For detailed instructions, refer to the appropriate Microsoft
documentation. In particular, refer to Microsoft Knowledge Base article
Q280353, How to Change Quorum Disk Designation.
3. If necessary, install the NetWorker software on the node that has access to
the quorum disk.
4. Recover any data except the quorum data that resided on the quorum disk
prior the disaster.
Important: Do not recover the quorum data.
Recovering the MSCS Cluster Configuration
The following procedure is based on these assumptions:
•
You have not changed the disk configuration from the time you
performed the last backup on the cluster database.
•
You have not replaced any hardware, including the shared disk, from the
time you performed the last backup on the cluster database.
•
Node_A has the latest backup of the system state.
•
Node_A or a virtual server has the latest backup of the quorum data.
6
To recover the MSCS cluster configuration, perform the following tasks:
•
“Task 1: Recover the System State and Quorum Data” on page 118
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Task 1: Recover the System State and Quorum Data
•
“Task 2: Replace the Quorum Data with the Recovered Quorum Data” on
page 118
•
“Task 3: Evict Node_B from the Cluster” on page 119
•
“Task 4: Install the Cluster Software and Patches on Node_B” on page 119
Task 1: Recover the System State and Quorum Data
To recover the system state and quorum data:
1. Select a node in the cluster that has the good (and possibly the latest)
backup of the system state and the quorum data. (This procedure uses
Node_A, for example.)
2. Verify that the Cluster Service is running on Node_A.
3. From Node_A, recover the following:
•
System state
•
Quorum data (If the quorum disk is owned by a virtual server, use
the directed recover procedure. For details, refer to the Legato
NetWorker Administrator’s Guide, Microsoft Windows Version.)
Make sure that you recover the quorum data to a different directory on the
quorum drive.
For example, if the quorum data previously resided in G:\MSCS, recover
the data to G:\RECOVER\MSCS.
4. Shut down Node_A.
Important: Do not reboot Node_A.
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Task 2: Replace the Quorum Data with the Recovered Quorum Data
To replace the quorum data to Node_B:
1. On Node_B, uninstall the cluster software.
2. Reboot Node_B.
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3. Copy the existing quorum data from its original location to another
directory. For example, copy:
G:\MSCS
to
G:\TEMP\MSCS
4. Replace the existing quorum data with the recovered quorum data. For
example, copy:
G:\RECOVER\MSCS
to
G:\MSCS
5. Shut down Node_B.
Task 3: Evict Node_B from the Cluster
To evict Node_B from the cluster:
1. Reboot Node_A.
2. Open the Cluster Administrator and evict Node_B from the cluster.
Task 4: Install the Cluster Software and Patches on Node_B
To install the cluster software and patches on Node_B:
1. Reboot Node_B.
2. Install the cluster software and join it to the cluster in which Node_A is a
member node.
3. On Node_B, apply any needed cluster patches and Windows service
packs.
6
4. Verify that the cluster configuration has been successfully recovered.
Performing a Cluster-Wide Recovery
Use the following procedures to perform a complete cluster recovery,
including reinstallation of the operating system on all nodes. These procedures
describe how to perform a recovery, either using existing hardware or new
hardware.
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Task 1: On Node_A, Install and Configure the Software
In the following example:
•
Choose the node that has the most up-to-date backup of the cluster
database (part of the registry) to serve as Node_A.
•
Defective nodes and shared drives have been replaced.
To recover the cluster to new hardware or existing hardware, perform the
following tasks:
•
“Task 1: On Node_A, Install and Configure the Software” on page 120
•
“Task 2: On Node_B, Install and Configure the Software” on page 121
•
“Task 3: Install and Configure NetWorker” on page 121
•
“Task 4: Perform a Disaster Recovery” on page 122
•
“Task 5: Check and Reassign the Drive Assignments” on page 122
•
“Task 6: Recover the Data” on page 123
•
“Task 7: Check the Disk Signatures” on page 123
•
“Task 8: Join Node_B to the Cluster” on page 124
Task 1: On Node_A, Install and Configure the Software
To install and configure the software, on Node_A:
1. Make sure the node has been properly:
•
Shut down
•
Connected through the shared disks
•
Terminated
2. Install Windows NT 4.0 Server Enterprise Edition.
a. Add the server to the domain using the same cluster login account.
b. Create the partitions so that the new disk configuration of Node_A
matches the original configuration.
6
c. Use the same IP address and server name (fully qualified DNS
domain name, if used) that were used originally.
d. Configure the network adapters and the IP address using the original
settings whenever possible.
e. Log on to the domain.
3. Using the Windows NT Disk Administrator, configure the drives to match
their previous configuration.
4. Install Windows NT 4.0 Server Enterprise Edition server-specific service
packs (Service Pack 3).
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5. Install the MSCS software.
6. Install any required service pack software. Make sure that the version is
greater than Service Pack 3.
7. If Node_A is a NetWorker server, configure the tape devices.
8. Log on to Node_A using the cluster account on the domain.
Task 2: On Node_B, Install and Configure the Software
To install and configure the software, on Node_B:
1. Make sure the node has been properly:
•
Shut down
•
Connected through the shared disks
•
Terminated
2. Install Windows NT 4.0 Server Enterprise Edition.
a. Add the server to the domain using the same cluster login account.
b. Create the partitions so the new disk configuration matches the
original configuration.
c. Use the same server name (fully qualified DNS if used) and IP
address that were used originally.
d. Configure the network adapters and the IP address using the original
settings whenever possible.
e. Log on to the domain.
3. Using the Windows NT Disk Administrator, configure the drives to match
their previous configuration.
4. Install Windows NT 4.0 Server Enterprise Edition server-specific service
packs (Service Pack 3).
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Task 3: Install and Configure NetWorker
Install and configure the NetWorker software and any required patches on
Node_A and Node_B. For details, refer to the Legato NetWorker Installation
Guide, Microsoft Windows Version.
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Task 4: Perform a Disaster Recovery
Task 4: Perform a Disaster Recovery
To perform a disaster recovery:
1. Shut down Node_B.
2. Perform a NetWorker disaster recovery of Node_A. For details, refer to
“Chapter 4: Windows Disaster Recovery” on page 47.
3. Restore the following directories:
•
Windows NT registry or system state
•
Windows NT system directory
Select Overwrite and Suppress Messages.
4. Recover the quorum and the shared drives data. Follow the directed
recovery procedure. For detailed instructions, refer to the Legato NetWorker
Administrator’s Guide, Microsoft Windows Version.
Note: Make sure you restore the \MSCS directory in the quorum to a
different location, for example \MSCStemp.
5. Shut down Node_A. Do not reboot Node_A.
a. The system will prompt you to restart. Select Yes.
b. Shut down the node when the system is in its reboot cycle.
6. Restart Node_B and log on with Administrator privilege.
7. On the quorum drive:
a. Rename the existing \MSCS directory to \MSCSold.
b. Move the restored \MSCS directory that was restored to \MSCStemp
to the \MSCS directory.
8. Shut down Node_B.
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Task 5: Check and Reassign the Drive Assignments
If you are replacing the cluster shared disks with new hardware, follow these
steps to check and reassign the drive assignments:
1. Reboot Node_A. The drive assignments may have changed. Use the Disk
Administrator to reassign the drives to their former drive letters.
2. Using the Control Panel Services tool, set the Cluster Service to Manual
startup.
3. Reboot Node_A.
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4. Replace the cluster shared disks.
5. Check the drive assignments through Windows Explorer. The “phantom”
drives you see are the original shared disks. These drives cannot be
deleted or disconnected from the Windows Explorer.
6. Remove the registry entries for the phantom disks:
a. Use regedit to display the following registry entry:
HKEY_LOCATION_MACHINE\SYSTEM\CurrentControlSet\Services
\ Clusdisk\Parameters\Signatures
The numbers listed under Signatures are the drive signatures for the
former shared disks. Delete these numbers.
b. Reboot the node.
c. Using Windows Explorer, check the status of the disks. There should
no longer be any phantom disks and the new shared disks should
have the proper drive letter assignments.
The new shared disk signatures are located in the following registry
key:
HKEY_LOCATION_MACHINE\SYSTEM\CurrentControlSet\Services
\Clusdisk\Parameters\AvailableDisks
Task 6: Recover the Data
To recover the data:
1. Use the NetWorker User program to restore the remaining data from tape.
Do not restore the following:
•
System state
•
RepairDisk
•
Windows NT system directory
For details, refer to “Chapter 4: Windows Disaster Recovery” on page 47.
2. Reboot Node_A.
3. Log on to a domain with Administrator privileges.
Task 7: Check the Disk Signatures
If you are replacing the shared disks, perform the following procedure to check
the disk signatures. If you are not replacing the shared disks, skip this task and
proceed to “Task 8: Join Node_B to the Cluster” on page 124.
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Task 8: Join Node_B to the Cluster
To check the disk signatures:
1. Replace the cluster shared disks with the new hardware:
a. Using the Control Panel Services tool, start the Cluster Service with
the -fixquorum startup option. This option allows you to fix or add a
new quorum drive.
b. Start the Cluster Administrator program and attach Node_A to the
cluster you are restoring.
c. Create the new disk resource for the quorum drive and place it in the
Quorum Group.
Note: For detailed information, refer to Microsoft Knowledge Base article
Q280353, How to Change Quorum Disk Designation.
d. From the Cluster Administrator program:
–
Rename all of the old shared disks.
–
Create new resources for the physical disks to match the old
shared disks.
–
Check for dependencies for the physical disk and make the
necessary modifications.
e. Create a new group and move all of the old shared disks to this
group. (This is done for cleanup purposes.)
Important: You cannot delete the old shared disks until both nodes are running
and both nodes are members of the cluster.
2. Using the Control Panel Services tool, set the MSCS service to Automatic
startup.
3. Remove any Startup Parameters that may have been previously set. For
example, remove -fixquorum.
6
Task 8: Join Node_B to the Cluster
To join Node_B to the cluster:
1. On Node_A, use the Cluster Administrator to evict Node_B from the
cluster.
2. Restart Node_B.
3. On Node_B, install the MSCS software and rejoin the cluster.
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4. Install the latest service pack software on Node_B. Make sure the version
is greater than Service Pack 3.
5. If NetWorker Server is installed in Node_A as a failover server:
a. Install NetWorker server software.
b. Register the resource extension. This manages the NetWorker server
resource type in Node_B. For more details, refer to the Legato
NetWorker Installation Guide, Microsoft Windows Version.
c. On Node_B, you can choose to:
– Configure the tape devices
– Install the NetWorker client software
6. Install any NetWorker specific patches.
7. Recover all the data that belongs to Node_B. This includes the system
configuration data. For example:
•
System State
•
RepairDisk
•
Windows NT 4.0 %SystemRoot% directory
•
C:
8. Reboot Node_B.
9. Verify that the system has been restored to its original state before the
disaster.
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Chapter 7: Microsoft Cluster Disaster Recovery
(Windows 2000 and .NET)
This chapter explains how to recover Microsoft Windows 2000 and Windows
.NET MSCS host systems. Familiarity with MSCS concepts and operations is
assumed. For complete information about MSCS, refer to the Microsoft
documentation.
This chapter includes the following sections:
•
“Recovering a Failed Quorum Disk” on page 128
•
“Recovering One Cluster Node” on page 129
•
“Recovering Multiple Cluster Nodes” on page 132
Prerequisites
To recover Windows 2000 or Windows .NET MSCS host systems, ensure that
each of the following prerequisites is satisfied:
•
The NetWorker software is installed on each cluster node.
•
Backups that include the SYSTEM save sets (SYSTEM FILES, SYSTEM
DB, and SYSTEM STATE) have been performed on a regular basis by a
NetWorker server in the same domain as the cluster nodes. This will help
ensure that data is available for recovery to the desired point in time. The
Microsoft cluster database is a component of the Windows system state,
and as such is automatically included when the SYSTEM STATE save set
is specified for backup or recovery.
•
During a recovery, the domain controller for the domain to which the
cluster nodes belong must be available to authenticate the node joining
the cluster.
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Recovering a Failed Quorum Disk
This section describes the procedure for recovering a failed quorum disk. The
procedure requires the following:
•
The quorum disk is designated for exclusive use by MSCS.
•
The quorum disk resides in a drive array that is not a RAID.
•
A spare disk, identical in type to the quorum disk, must be available to
replace the failed disk. The spare disk must have at least as much total
disk space as the quorum disk that is being replaced.
•
The new quorum disk must be assigned the same drive letter as the failed
disk.
For related information, refer to Microsoft Knowledge Base article Q280353,
How to Change Quorum Disk Designation.
How to Recover a Failed Quorum Disk
To recover a failed quorum disk:
1. Close all instances of Microsoft Cluster Administrator.
2. Stop the cluster service on both nodes.
3. Using the Computer Management Services tool, access the Cluster Service
Properties dialog box and change the startup type to Manual on both
nodes.
4. Power down both nodes and the drive array.
5. Replace the failed quorum disk.
6. Power up both nodes and the drive array.
7. Format the new disk with the same partitioning scheme, disk format,
drive letter, and label as the failed quorum disk. Verify that the new disk
appears identical on both nodes.
8. On one node, use the Computer Management Services facility to access the
Cluster Service Properties dialog box.
9. Add -fixquorum as a start parameter and start the service.
10. Use the Cluster Administrator to rename the failed quorum resource to
RemoveMe.
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11. Create a new disk resource named:
Diskx
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where x is the drive letter of the old quorum disk.
12. Place the new disk resource in the Cluster Group.
13. Bring this disk resource online.
14. Right-click the cluster name and select Properties.
15. Select the Quorum tab and make the new drive the quorum resource.
16. Using the Computer Management Services tool, access the Cluster Service
Properties dialog box and:
a. Stop the Cluster service.
b. Remove -fixquorum as a start parameter.
c. Start the Cluster service.
17. Start the Cluster service on the other node.
18. Delete the RemoveMe resource.
19. Bring the cluster group online.
20. Using the Computer Management Services tool, access the Cluster Service
Properties dialog box and change the Cluster service startup type to
Automatic on both nodes.
21. Reboot both nodes.
Recovering One Cluster Node
This section describes how to restore the Cluster Server and cluster database if
one of the cluster nodes fails.
Unexpected software behavior, such as corruption of a cluster-critical file, may
cause a partitioned cluster, in which one node of the cluster is unaware of the
presence of the other operating node. In this situation, each node may attempt
to take control of the shared quorum device, thus potentially rendering one
node unable to function as a member of the cluster.
How to Recover One Cluster Node
The following procedure is based on an example scenario in which Node_B
has failed, and the quorum resource has successfully failed over to Node_A.
The operating system on each node is still intact, and therefore does not
require recovery. The status of MSCS on Node_B is unknown, so it must be
reinstalled (if using Windows 2000) or cleaned up (if using Windows .NET).
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To recover Node_B in this example scenario:
1. Using the Cluster Administrator on Node_A, evict Node_B from the
cluster.
2. On Node_B, reinstall or clean up MSCS as follows:
Windows 2000:
a. Using the Control Panel Add/Remove Programs tool, uninstall the
Windows component Cluster Service.
b. Reboot Node_B.
c. Log on to Node_B as Administrator for the domain in which the
cluster nodes reside.
d. Using the Control Panel Add/Remove Programs tool, add the
Windows component Cluster Service.
Windows .NET:
At the command prompt, run the following command to clean up MSCS:
cluster node Node_B /forcecleanup
Important: After reinstalling the Cluster Service (Windows 2000) or cleaning
up the Cluster Server (Windows .NET), you must reproduce the preexisting
application environment on Node_B so MSCS can administer the applications
as it did before the node failed. One way to reproduce the preexisting
application environment is to perform disaster recovery procedures for each
application that was previously installed on the node.
3. Using the Cluster Administrator, select Join An Existing Cluster and enter
the cluster name.
4. Using the Cluster Administrator on Node_A, ensure that Node_B appears
available for failover operations.
5. Only Node_A, the node that owns the shared resources, can be running
while the cluster database is being recovered. Stop the Cluster service on
Node_B using one of the following methods:
7
•
Using the Control Panel Services tool, stop the Cluster service.
•
At the command prompt, run:
net stop clussvc
6. On Node_A, start the NetWorker User program and click Recover.
7. In the Source Client dialog box, select Node_A.
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8. In the Destination Client dialog box, select Node_A.
9. In the Recover window, mark the SYSTEM STATE save set. The cluster
database is a component of the Windows system state, and is
automatically backed up or restored with the SYSTEM STATE save set.
Note: It is strongly recommended that you restore all of the SYSTEM save
sets (SYSTEM STATE, SYSTEM DB, and SYSTEM FILES). For more
information, refer to the Legato NetWorker Administrator’s Guide, Microsoft
Windows Version.
10. Click Start to begin the recovery.
11. After the recovery, reboot Node_A.
12. Using Cluster Administrator on Node_A, confirm that the cluster
resources were restored to the point in time when the backup occurred. If
you have been performing regular scheduled backups, this will recover
the cluster database to a point in time shortly before the loss of Node_B.
13. Start the Cluster service on Node_B using one of the following methods:
•
Using the Control Panel Services tool, start the Cluster service.
•
At the command prompt, run:
net start clussvc
14. Using the Cluster Administrator on Node_A, monitor the cluster joining
status of Node_B.
15. Using the Cluster Administrator on Node_B, verify that the cluster group
can be moved between the nodes by right-clicking the group and selecting
Move group.
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Recovering Multiple Cluster Nodes
This section provides general guidelines for performing a cluster recovery in
case both cluster nodes fail. In this scenario, the operating system is unusable
on each node. Therefore, this recovery procedure includes reinstallation of
Windows on each node, as well as NetWorker recovery of the cluster database.
Important: Because cluster configurations vary, it is not possible to provide
cluster disaster recovery procedures for every situation. Depending on the
particular cluster configuration and the nature of the failure, it might be
necessary to vary some of the procedures described in this section.
How to Recover Multiple Cluster Nodes
To perform a complete cluster recovery in the event that both cluster nodes,
Node_A and Node_B, have failed:
1. Ensure that the system disk of each node is configured using the same
partitioning scheme and drive letter that was in use prior to the loss of the
node.
Note: On each cluster node, the repaired or replaced system disk must
have the same partitioning scheme, disk format, and drive letter
configuration that was in use prior to the node failure. However, drive
letter assignments of available volumes during Windows setup may cause
the system disk drive letter to change. Therefore, prior to reinstalling the
Windows operating system, disconnect the SCSI bus if the shared drives
are being enumerated before the local drives.
2. Format and verify the system disk on each node.
3. On each node, reinstall Windows to the partition it occupied before the
node failure. During Windows setup on each node, verify that the domain
controller is available and that each potential node is able to join.
4. Delete the MSCS folder on the quorum disk.
5. On the quorum disk, run the chkdsk command.
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6. For Windows 2000 systems, install the Cluster Service on Node_A:
a. While Node_B is still detached from the shared SCSI bus, using the
Control Panel Add/Remove Programs tool, add the Windows
component Cluster Service. The Cluster Setup Wizard appears.
b. Using the Cluster Setup Wizard, enter the same configuration
information that was in use prior to the failure of the cluster nodes
(including user account, IP addresses, and cluster name).
c. Reboot Node_A.
Note: This step is not required for Windows .NET systems because the Cluster
Service is installed automatically with Windows.
7. For Windows 2000 systems, install the Cluster Service on Node_B:
a. On Node_B, using the Control Panel Add/Remove Programs tool,
add the Windows component Cluster Service. The Cluster Setup
Wizard appears.
b. Using the Cluster Setup Wizard, select Join An Existing Cluster and
enter the cluster name.
c. Reboot Node_B.
Note: This step is not required for Windows .NET systems because the Cluster
Service is installed automatically with Windows.
8. On Node_B, run the net stop clussvc command from a command prompt.
9. Install the NetWorker client software on Node_A.
10. From NetWorker User on Node_A, select the SYSTEM FILES and SYSTEM
STATE save sets to recover to the desired point in time prior to the cluster
failure. Click Start to begin the recovery process.
11. After the recovery of Node_A is complete, reboot Node_A.
12. On Node_A, run the Cluster Administrator to confirm that the states of the
cluster resources were restored to the desired point in time.
13. Start the cluster service on Node_B using one of the following methods:
•
Run net start clussvc from a command prompt.
•
Using the Computer Management Services tool, right click Cluster
Server and select Start.
14. From the Cluster Administrator on Node_B, verify that the cluster group
can be moved between the nodes by right-clicking the group and selecting
Move group.
15. Reinstall the NetWorker client software on Node_B.
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Chapter 8: Sun Cluster Disaster Recovery
This chapter explains how to recover one or more computers in a Sun Cluster
3.x environment.
This chapter includes the following sections:
•
“Prerequisites” on page 135
•
“Restoring a Single Cluster Node” on page 135
•
“Restoring an Entire Cluster” on page 136
Prerequisites
To help prepare for a disaster, complete the Sun Installation and Planning
Configuration worksheets. These worksheets contain information that you can
use to restore a cluster to its original configuration. These worksheets are
located in the Sun Cluster 3.0 Release Notes.
Additionally, ensure that you regularly back up both physical and virtual
NetWorker clients. A physical NetWorker client backs up a physical node. A
virtual NetWorker client backs up a highly available Sun Cluster resource
application. Examples of applications that can be set up as highly available
Sun Cluster resources include a NetWorker server or a web server application.
Restoring a Single Cluster Node
This section describes how to restore a single cluster node. This scenario
assumes that the operating system on the damaged node must be reinstalled.
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How to Restore a Single Cluster Node
To restore a single node:
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1. Replace the damaged node and ensure that it is connected to the network.
For information about replacing the hardware and verifying network
connections, refer to the Sun Cluster 3.x Hardware Guide and the server
documentation.
2. Reinstall the operating system and the Sun Cluster software on the
recovered node and reconfigure the node to join the cluster. For detailed
instructions, refer to the Sun Cluster Installation Guide.
3. Install the NetWorker software.
Important: The installation steps you perform vary depending on whether the
NetWorker server is set up as a highly available Sun Cluster resource or the
NetWorker server is set up outside of the cluster. For detailed installation and
configuration instructions for Sun Clusters, refer to the Legato NetWorker
Installation Guide, Solaris Version.
4. Restore the physical node’s private data using the nwrecover command.
Private data is data that is not available to all nodes in the cluster. For
information about recovering physical NetWorker clients, refer to the
Legato NetWorker Administrator’s Guide, UNIX Version.
Restoring an Entire Cluster
This section describes how to restore an entire cluster.
How to Restore an Entire Cluster
To restore an entire cluster, complete the following tasks:
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•
“Task 1: Replace the Damaged Hardware” on page 137
•
“Task 2: Install the Software” on page 137
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“Task 3: Recover the Data” on page 138
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Important: To help ensure a smooth recovery process, have a copy of the Sun
Installation and Planning Configuration worksheets on hand. These worksheets
are located in the Sun Cluster 3.0 Release Notes and should be completed before
setting up the Sun Cluster.
Task 1: Replace the Damaged Hardware
To replace the damaged hardware:
•
Replace all damaged nodes and ensure that network connections are
working. For information about replacing the hardware and verifying
network connections, refer to the Sun Cluster 3.x Hardware Guide and the
server documentation.
Task 2: Install the Software
To install the software:
1. Reinstall and reconfigure the operating system and Sun Cluster software
on all cluster nodes. For detailed instructions, refer to the Sun Cluster
Installation Guide.
Important: Ensure that you reconfigure the cluster, including the disk device
groups and resource groups, exactly as it was before the disaster.
2. Reinstall the NetWorker server software on all cluster nodes and configure
the NetWorker server as a highly available Sun Cluster resource.
Important: If the NetWorker server was not set up as a highly available Sun
Cluster resource, you need only install the NetWorker client on all cluster
nodes. For detailed installation instructions for Sun Clusters, refer to the Legato
NetWorker Installation Guide, Solaris Version.
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Task 3: Recover the Data
This section describes how to recover the NetWorker server as well as the
physical and virtual NetWorker clients.
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On the primary node for the NetWorker server:
1. Recover the highly available NetWorker server data as you would a
stand-alone NetWorker server. For information about recovering a
NetWorker server, see “Chapter 3: UNIX Disaster Recovery” on page 25.
This step recovers the media database, resource database, and client file
indexes, all of which are used to recover NetWorker clients.
2. Recover the physical and virtual NetWorker clients. For information about
recovering physical and virtual NetWorker clients, refer to the Legato
NetWorker Administrator’s Guide, UNIX Version.
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Chapter 9: HP TruCluster Disaster Recovery
This chapter explains how to recover one or more computers in an HP
TruCluster Server environment, releases 5.0A to 5.1B.
This chapter includes the following sections:
•
“Prerequisites” on page 139
•
“Restoring One or More Nodes in a Cluster” on page 140
•
“Restoring an Entire Cluster” on page 143
Prerequisites
Preparing for a disaster involves two major tasks, recording information and
backing up the cluster. These tasks are described in the following sections:
•
“Record Information” on page 139
•
“Back Up the Cluster” on page 140
Record Information
This section describes the information required to restore an entire cluster.
Keep an up-to-date copy of the following information in a safe place:
•
Network settings for each node in the cluster.
•
Partition information for the disk drives in the system.
•
Mappings for the managed disks and volumes. To save this information,
open the System Reference Manual (SRM) console and display the output
of the Show Devices option. Record this output on paper and store the
paper in a safe place.
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•
System topology information. Generate this information using the
hwmgr -view command:
# hwmgr -view hierarchy > sys_topology_file
where sys_topology_file is a file to which you are saving output from the
hwmgr -view hierarchy command.
•
The device layer information. Generate this information as follows:
# hwmgr -view devices > device_layer
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where device_layer is a file to which you are saving output from the
hwmgr -view devices command.
Back Up the Cluster
To ensure that the cluster is disaster-ready, perform the following steps:
1. Back up the entire cluster.
a. Set up a NetWorker Client resource for the cluster’s default alias.
b. Add the host name of each physical cluster node to the Client
resource’s Remote Access list.
c. Specify a save set of All for the Client resource. A save set of All
ensures that filesystems from all nodes are backed up.
d. Create a NetWorker Group resource, add the Client resource to this
group, and schedule the group for regular backups.
e. Perform at least one full backup.
2. Optionally, back up the stand-alone HP Tru64 boot drive on the cluster’s
primary node to a remote NetWorker server. You may need to mount the
drive partitions temporarily and execute a manual save.
Restoring One or More Nodes in a Cluster
This section explains how to recover one or more physical nodes in a cluster. If
all of the physical nodes in a cluster have been destroyed, see “Restoring an
Entire Cluster” on page 143.
Note: To help ensure a successful recovery, have on hand the information
listed in the section titled, “Prerequisites” on page 139. This information
should have been recorded prior to the disaster.
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How to Restore One or More Nodes in a Cluster
To recover one or more physical cluster nodes, complete the following tasks:
•
“Task 1: Replace the Damaged Hardware” on page 141
•
“Task 2: Verify Hardware Mappings” on page 141
•
“Task 3: Partition the Down Node’s Boot Drive” on page 141
•
“Task 4: Update the Cluster Configuration” on page 141
•
“Task 5: Recover the Node-Specific Data” on page 142
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Task 1: Replace the Damaged Hardware
Replace the damaged equipment with the same or similar model equipment as
installed previously. Connect all the equipment as previously connected.
Task 2: Verify Hardware Mappings
Open the SRM console on the node you are restoring (down node) and set the
logical mappings for the node’s managed disks and volumes to their original
settings. To help complete this step, use the information that was recorded
from the SRM console prior to the disaster.
Task 3: Partition the Down Node’s Boot Drive
To partition the down node’s boot drive, you need the original node’s partition
information. This information should have been recorded prior to the disaster.
Note: Perform this task from a working cluster node.
To partition the down node’s boot drive, use a utility such as diskconfig and
specify the original partition settings.
Task 4: Update the Cluster Configuration
To update the cluster configuration, delete the cluster node and then add it
back into the cluster. When you add the node back, cluster hardware settings
are reinitialized.
Note: Perform this task from a working cluster node.
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To update the cluster configuration:
1. Delete the cluster node:
# clu_delete_member -m member#
where member# is the number of the cluster node.
2. Remove the node’s boot partition domain:
# rmfdmn rootmember#_domain
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3. Add the computer back into the cluster using the clu_add_member
command. For more information about adding a cluster node, refer to the
TruCluster documentation.
Task 5: Recover the Node-Specific Data
Once the cluster node has been added and configured, recover its
node-specific data. Node-specific data includes information such as node
licenses and volume definitions that would be difficult and time-consuming to
replace unless they are recovered.
Note: Perform this task on the down node:
To recover the node-specific data:
1. Boot the cluster node.
# boot -file genvmunix dkc2
where dkc2 is the cluster disk.
2. Use the NetWorker recover command in interactive mode to recover the
cluster node data, as shown in the following example.
Note: The force option is used in this step so that the recovered files
overwrite the existing files.
# recover -c cluster_default_alias
recover> add /usr/cluster/members/membermember#
recover> add /var/cluster/members/membermember#
recover> add /cluster/members/membermember#/etc
recover> cd /cluster/members/membermember#
recover> delete ddr*
recover> delete gen*
recover> delete dfsl*
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recover> delete dvrdevtab*
recover> force
recover> recover
where cluster_default_alias is the name of the cluster and member# is the
member ID of the down cluster node.
3. Use the NetWorker recover command to recover the node’s dev and devices
directories, as in the following example.
Note: The noforce option is used in this step so that the recovered files do
not overwrite the existing files.
# recover -c cluster_default_alias
recover> add /dev /devices
recover> cd /cluster/members/membermember#
recover> add dev devices
recover> noforce
recover> recover
where cluster_default_alias is the name of the cluster and member# is the
member ID of the down cluster node.
Note: When prompted to overwrite files, enter N to prevent files from
being overwritten.
4. Recompile the kernel using the doconfig command.
Restoring an Entire Cluster
This section explains how to recover an entire cluster that has been destroyed.
Note: To help ensure a successful recovery, have on hand the information
listed in the section titled, “Record Information” on page 139. This information
should have been recorded prior to the disaster.
How to Restore an Entire Cluster
To recover an entire cluster, perform the following tasks:
•
“Task 1: Replace the Damaged Hardware” on page 144
•
“Task 2: Verify Hardware Mappings” on page 144
•
“Task 3: Install and Configure the Cluster Software” on page 144
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•
“Task 4: Install the NetWorker Software” on page 145
•
“Task 5: Configure NetWorker Device and Autochanger Resources” on
page 146
•
“Task 6: Locate the Server’s Bootstrap Save Set ID” on page 146
•
“Task 7: Recover the Server’s Bootstrap” on page 147
•
“Task 8: Locate the Server’s Client File Index Save Set IDs” on page 148
•
“Task 9: Recover the Server’s Client File Index” on page 149
•
“Task 10: Re-create the Cluster” on page 150
•
“Task 11: Recover the Cluster Data” on page 150
Task 1: Replace the Damaged Hardware
Replace the damaged equipment with the same or similar model equipment as
installed previously. Connect all the equipment as previously connected.
Task 2: Verify Hardware Mappings
Open the SRM console and set the logical mappings for each node’s managed
disks and volumes to their original settings. To help complete this step, use the
information that was recorded from the SRM console prior to the disaster.
Task 3: Install and Configure the Cluster Software
Perform a stand-alone installation of Tru64 on the primary node’s stand-alone
boot drive. This task requires the cluster information that was recorded prior
to the disaster.
To install and configure the software:
1. Install the base operating system and TruCluster package on the primary
node’s stand-alone boot drive. For more information, refer to the
TruCluster installation documentation.
2. Configure the network resources.
3. Verify that the system topology matches what you recorded, and the
device layer is configured the same, as follows:
# hwmgr -view hierarchy
# hwmgr -view devices
4. If the logical disks are enumerated differently than in the original
configuration, manually reapply the original enumeration to the disks.
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If you need to remap device numbers, use the -e option with the following
command:
# dsfmgr -e dsk10 dsk4
where dsk10 is the new disk enumeration value and dsk4 is the original disk
enumeration value.
Alternatively, if you want to move a device number, use the -m option.
# dsfmgr -m dsk10 dsk4
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Task 4: Install the NetWorker Software
Perform this task if the NetWorker server was installed as a highly available
cluster application. If the NetWorker server is outside the cluster, skip this task
and proceed to “Task 9: Recover the Server’s Client File Index” on page 149.
To install NetWorker software:
1. Install the same version of the NetWorker server software. When
prompted during the installation, enter the location of the /nsr directory as
follows:
/nsr
For more information about installing NetWorker software, refer to the
appropriate Legato NetWorker Installation Guide.
2. Install any NetWorker patches that were installed prior to the disaster.
3. If separate filesystems were created for the subdirectories under the
original /nsr directory, mount those filesystems under this /nsr directory.
Separate filesystems may have been created for subdirectories, such as
/nsr/mm or /nsr/index, that became very large.
4. Re-create the cluster’s /nsr directory:
# mkdir -p /cluster_default_alias/nsr
# cd /cluster/members/member0
# ln -s /cluster_default_alias/nsr nsr
# cd /cluster/members/member1
# ln -s /cluster_default_alias/nsr nsr
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Task 5: Configure NetWorker Device and Autochanger Resources
To configure the Device and Autochanger resources:
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•
To recover data using a stand-alone device, ensure that the stand-alone
Device resource exists (defined in the /nsr/res directory). If the stand-alone
Device resource does not exist, create it using the NetWorker
Administrator program.
•
To recover data using an autochanger, ensure that the Autochanger
resource exists (defined in the /nsr/res directory). If the Autochanger
resource does not exist, create it using the jbconfig command. For details
about using the jbconfig command, refer to the Legato NetWorker
Administrator’s Guide, UNIX Version.
If you are using an autochanger, reset the autochanger using the
nsrjb -vHE command. This command resets the autochanger, ejects
backup volumes, reinitializes the element status, and checks each slot for
a volume.
If the autochanger does not support the -E option, initialize the element
status using sjiielm.
If you are using an autochanger, inventory the autochanger using the
nsrjb -I command. This helps determine whether the volumes required to
recover the bootstrap are located inside the autochanger.
Task 6: Locate the Server’s Bootstrap Save Set ID
Perform this task if you need to locate the bootstrap save set ID in order to
recover the NetWorker server’s latest bootstrap. If you have a record of the
save set ID for the bootstrap, proceed to “Task 7: Recover the Server’s
Bootstrap” on page 147.
Important: If you move the NetWorker backup media to an offsite location and
a subsequent file recover operation generates a mount request, the recover
operation will wait until an operator satisfies the mount request. To avoid
delays, use the mminfo -mv command to list the media associated with the file
you are recovering. If necessary, retrieve the media from the offsite storage
before starting the recover.
To locate the most recent bootstrap save set ID:
1. Insert the most recent media or clone volumes used for scheduled backups
into the appropriate device.
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2. At the system prompt, switch to the directory where the NetWorker
binaries and executables are located.
3. If you are using an autochanger, insert the first volume of the bootstrap
save set into the first drive of the autochanger using the following
command:
# nsrjb -lnv -S slot -f device-name
where:
–
slot is the slot where the first volume is located
–
device-name is the pathname for the first drive. You can obtain this
device-name using the inquire command.
9
4. Determine the save set ID of the most recent bootstrap on the media, as
follows:
# scanner -B device_name
where device_name identifies a device such as /dev/ntape/tape0_d1.
If you do not locate the save set ID of the most recent bootstrap on the most
recent media, run the scanner -B command on preceding media to locate
the save set ID of the most recent bootstrap.
5. When you see the output, record both the bootstrap save set ID and the
volume label.
Task 7: Recover the Server’s Bootstrap
To recover the NetWorker server bootstrap:
1. Use the mmrecov command to recover the NetWorker server’s bootstrap
(media database and resource configuration files):
# mmrecov
Important: The mmrecov command overwrites the server’s media database. It
does not overwrite the resource configuration files, but instead mmrecov
recovers them to the resource directory, res.R. For syntax and option
information about mmrecov, refer to the mmrecov man page or the Legato
Command Reference Guide.
2. If the server has multiple devices configured and enabled, enter the name
of the device you are using for the recovery when the following message
appears:
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What is the name of the device you plan on using
/dev/ntape/tape0_d1
3. When the following message appears, enter the save set ID for the latest
bootstrap. If you are recovering a cloned version of the bootstrap, specify
the save set ID associated with the clone.
Enter the latest bootstrap save set ID []: 20076
4. When the following message appears, enter the file number to begin the
recovery. If unknown, press [Enter].
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Enter starting file number (if known) [0]: 130
5. When the following message appears, enter the first record number to
begin the recovery. If unknown, press [Enter].
Enter starting record number (if known) [0]: 0
6. When the following message appears, follow the prompt:
Please insert the volume on which save set id 20076 started
into /dev/ntape/tape0_d1.
Once you have loaded the appropriate volume, the following message
appears:
Scanning /dev/ntape/tape0_d1 for save set 20076; this
might take a while...
NetWorker software then scans the volume for the appropriate save set
and recovers it. The NetWorker media database and resource
configuration files are recovered when the following message appears:
If your resource files were lost, they are now recovered
in the ‘res.R’ directory. Copy or move them to the ‘res’
directory, after you have shut down the service. Then
restart the service.
Otherwise, just restart the service.
If the on-line index for the server-name was lost, it
can be recovered using the nsrck command.
Task 8: Locate the Server’s Client File Index Save Set IDs
Locate the save set IDs of the NetWorker server’s client file index. If there have
been incremental backups since the last full backup, you need the save set ID
of the last full backup and the save set IDs of each incremental backup since
the last full backup.
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To locate the client file index save set IDs, use the mminfo command to display
the client file index’s save set ID:
# mminfo -av -N index:cluster_default_alias
where cluster_default_alias is the name of the cluster.
Task 9: Recover the Server’s Client File Index
In this task, you recover the most recent client file index from the last full
backup and all subsequent incremental backups. The client file index contains
detailed information about the backups performed for each NetWorker client.
1. Use the recover command to restore the client file indexes. Recover the
most recent full backup first and then recover the subsequent incremental
backups from earliest to latest. For example, if the dates for the last full
backup and the last two incremental backups are as follows:
•
Oct. 15, last full backup
•
Oct. 16, second to last incremental backup
•
Oct. 17, last incremental backup
then to restore the client file indexes you would enter the following:
# recover -S full_SSID -iY
# recover -S second_last_incremental_SSID -iY
# recover -S last_incremental_SSID -iY
where the _SSID variables are the save set IDs of the last full backup, the
second to last incremental backup, and the last incremental backup,
respectively.
2. Use the nsrim command to cross-check the media database and index
database:
# nsrim -X
3. Use the nsrck command to check and repair the client file indexes if
necessary:
# nsrck -L6
4. Verify that the indexes were recovered properly:
# nsrinfo cluster_default_alias
where cluster_default_alias is the name of the cluster.
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Task 10: Re-create the Cluster
To re-create the cluster, run the clu_create command:
# clu_create
For more information about installing the cluster, refer to the TruCluster
documentation.
Note: Do not reboot after running clu_create. Remain in stand-alone HP Tru64
mode.
9
Task 11: Recover the Cluster Data
To recover the cluster data:
1. Mount the root, usr, and var cluster directories:
# mount cluster_root#root /mnt
# mount cluster_usr#usr /mnt/usr
# mount cluster_var#var /mnt/var
where /mnt is the mount point.
2. Restore the cluster data using the recover command in interactive mode,
as shown in the following example.
Note: The force option is used in this step so that the recovered files
overwrite the existing files.
# recover -c cluster_default_alias
recover> cd /
recover> add .*
recover> add *
recover> delete /devices /dev
recover> cd /etc
recover> delete dec* dccd* dcdd* ddr*
recover> delete disktab dvrdevtab gen* dfsc*
recover> cd /cluster/members/member0
recover> delete boot_partition dev devices
recover> delete etc/ddr*
recover> delete etc/gen*
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recover> delete etc/dfsl*
recover> delete dvrdevtab
recover> cd /cluster/members/member1
recover> delete boot_partition dev devices
recover> delete etc/ddr*
recover> delete etc/gen*
9
recover> delete etc/dfsl*
recover> delete dvrdevtab
where cluster_default_alias is the name of the cluster.
3. Repeat the following delete command for each cluster member, except for
cluster members 0 and 1.
recover> delete /cluster/members/membermember#
recover> force
recover> relocate /mnt
recover> recover
where member# is the member ID of any cluster member except node 0 or 1.
4. Use the recover command in interactive mode to restore the dev and devices
directories for each cluster node as shown in the following example.
Note: The noforce option is used in this step so that recovered files do not
overwrite existing files.
# recover -c cluster_default_alias
recover> add /dev /devices
recover> cd /cluster/members/member0
recover> add dev devices
recover> cd /cluster/members/member1
recover> add dev devices
recover> noforce
recover> relocate /mnt
recover> recover
where cluster_default_alias is the name of the cluster.
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Note: When prompted to overwrite files, enter N to prevent files from
being overwritten.
5. Unmount the /mnt directory:
# unmount /mnt/var /mnt/usr /mnt
6. Shut down the system and boot the primary node off of its shared
HP Tru64 member boot drive.
7. Although optional, you should recompile the kernel using doconfig on
the primary node, and then reboot.
9
8. For information about recovering the remaining cluster nodes, see
“Restoring One or More Nodes in a Cluster” on page 140.
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Chapter 10: HP-UX Cluster Disaster Recovery
This chapter explains how to recover one or more computers in an HP-UX
MC/ServiceGuard cluster environment.
This chapter includes the following sections:
•
“Recovering a Single Cluster Node”
•
“Performing a Cluster-Wide Recovery” on page 154
Recovering a Single Cluster Node
This section describes how to recover a cluster server on one node. This
scenario assumes that the operating system on the participating nodes has
failed and must be reinstalled. The functionality of the MC/ServiceGuard
component on the node is also in question.
How to Recover a Single Cluster Node
To recover a single node:
1. Install the operating system and the cluster software. Configure the
volume groups.
2. Add the node to the cluster:
a. Click Cluster in the System Administration Manager (SAM).
b. Select High Availability Clusters>Cluster Administration>Specify
Nodes to Join Cluster.
Note: You can also use the cmrunnode command instead of SAM.
3. Recover the node’s data from a recent backup.
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Performing a Cluster-Wide Recovery
This section describes how to perform a complete cluster recovery, including
reinstalling the operating system on all nodes in the cluster.
How to Perform a Cluster-Wide Recovery
To recover an entire cluster, perform the following tasks:
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•
“Task1: Install the Software” on page 154
•
“Task 2: Restore the Cluster Database” on page 154
•
“Task 3: Start the Cluster” on page 155
•
“Task 4: Restore the Data” on page 156
Task1: Install the Software
To install the software:
1. Install the operating system and cluster software on each node.
2. Install the NetWorker software as required within the HP-UX
MC/ServiceGuard cluster environment. For detailed instructions, refer to
the Legato NetWorker Installation Guide, HP-UX Version.
Task 2: Restore the Cluster Database
1. Select any node in the cluster and run the NetWorker server and client
software on that node.
2. Re-create the cluster configuration and the NetWorker software
configuration and control files. The default location for the cluster
configuration file is /etc/cmcluster and the default directory for the
NetWorker configuration and control files is /etc/cmcluster/NetWorker.
•
If you know where the latest save sets are located, use the scanner
command to restore the configuration files:
# scanner -S saveset_id device_path | uasm -i y -rv
where device_path is the path to the tape device.
•
If you do not know the save set ID, use the scanner device_path
command to determine the saveset ID, as follows:
# scanner device_path > /tmp/savefile 2>&1
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3. Run the NetWorker NetWorker.cluster script located in the
/opt/NetWorker/bin/ directory.
Note: Do not re-create the legato.control and pkg.control files when
prompted by the NetWorker.cluster script.
4. If the shared disk has to be replaced, configure the disk and filesystem of
the replacement disk.
5. Create the filesystem, as follows:
# vgchange -c n /dev/vg03
# vgchange -a y /dev/vg03
# newfs -F hfs /dev/vg03/rlvol1
# vgchange -a n /dev/vg03
6. Enter the following command to delete the existing cluster and package
configurations:
# cmdeleteconf -c cluster1
7. Enter the following command to apply the cluster and package
configurations, including the NetWorker package, to all the nodes within
the cluster:
# cd /etc/cmcluster
# cmapplycomf -C cluster1.ascii -P networker/pkg.conf \
-P other_pkg/other_pkg
8. Run the cmgetconf command to save the new cluster or package ASCII
configuration file whenever the cluster or package configuration is created
or modified, as follows:
# cmgetconf -c cluster1 cluster1.ascii
# cmgetconf -p networker pkg.conf
These ASCII files can be saved in the /etc/cmcluster directory of a node.
Ensure that the NetWorker software backs up /etc/cmcluster so that the
configurations can be restored using cmapplyconf whenever necessary.
Task 3: Start the Cluster
To start the cluster, enter the following command:
# cmruncl
This also starts the NetWorker software.
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Task 4: Restore the Data
To restore the data:
1. Perform a disaster recovery on the shared disk using mmrecov and
recover. For more information about performing a disaster recovery, refer
to the Legato NetWorker Administrator’s Guide, UNIX Version.
When you shut down the NetWorker software during this step, use
cmhaltpkg and not nsr_shutdown, as follows:
# cmhaltpkg networker
# exchange -a c /dev/vg03
# mount /dev/vg03/lvol1 /vg031
# mv /vg031/nsr/res /vg031/nsr/res.old
# mv /vg031/nsr/res.R /vg031/nsr/res
10
# umount /vg031
# vgchange -a n /dev/vg03
# cmmodpkg -e networker (to restart the NetWorker software)
2. Recover the clients' data from recent backups.
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Chapter 11: Legato AAM for AIX, HP-UX, and
Linux Disaster Recovery
This chapter explains how to recover one or more computers in an Automated
Availability Manager (AAM) for an AIX, HP-UX, or Linux environment.
This chapter includes the following sections:
•
“Recovering a Single Cluster Node”
•
“Performing a Cluster-Wide Recovery” on page 159
•
“Renaming the Resource Directory” on page 164
Recovering a Single Cluster Node
This section describes how to recover a failed node within a cluster. This
scenario assumes that the operating system on the participating nodes is intact
and will not be recovered. The functionality of the AAM component on the
node is in question.
How to Recover a Single Cluster Node
To recover a single node:
1. Install the NetWorker software. For detailed installation and configuration
instructions, refer to the appropriate Legato NetWorker Installation Guide.
2. Start the NetWorker client.
3. Using the cluster’s virtual NetWorker server running on an unaffected
node, restore the node's data and software from a recent backup. For
detailed instructions, refer to the Legato NetWorker Administrator’s Guide,
UNIX Version.
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4. Make sure to restore the following directories:
AIX
•
/etc/rc*
•
$FT_DIR/config/*
•
$FT_DIR/log/*
•
$FT_DIR/<domain_name><node_name>
HP-UX
•
/etc/rc*
•
$FT_DIR/config/*
•
$FT_DIR/log/*
•
$FT_DIR/<domain_name><node_name>
Linux
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•
/etc/rc*.d
•
/etc/init.d
•
$FT_DIR/config/*
•
$FT_DIR/log/*
•
$FT_DIR/<domain_name><node_name>
5. Restore or copy the following files from the active node:
AIX
•
$FT_DIR/bin/envsh ($FT_DIR/bin/envcsh if using C shell)
•
/usr/bin/nw_ux.lc
HP-UX
•
$FT_DIR/bin/envsh ($FT_DIR/bin/envcsh if using C shell)
•
/opt/networker/bin/nw_ux.lc
Linux
•
$FT_DIR/bin/envsh ($FT_DIR/bin/envcsh if using C shell)
•
/usr/sbin/nw_ux.lc
6. Start the cluster virtual server on the node, as follows:
cd $FT_DIR/bin (or source ./envcsh if using C shell)
. ./envsh
./ft_startup -domain domain_name
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If the virtual server fails to start on the node because of an outdated sites
file, copy the following file from the active node:
$FT_DIR/config/domain_name_sites
7. Run the networker.cluster script, as follows:
AIX: /usr/bin/networker.cluster
HP-UX: /opt/networker/bin/networker.cluster
Linux: /usr/sbin/networker.cluster
If you have already restored or copied the nw_ux.lc file from an active
node, answer No to the following prompt:
Do you wish to automatically add site-specific values for:
NSR_SHARED_DISK_DIR and NSR_SERVICE_ID in
/AAM_ installation_ directory
Yes or No [Yes]? no
Performing a Cluster-Wide Recovery
This section describes how to perform a complete cluster recovery, including
reinstalling the operation system on all nodes in the cluster.
How to Perform a Cluster-Wide Recovery
Perform the following tasks for a cluster-wide recovery:
•
“Task 1: Install the Software” on page 159
•
“Task 2: Restore the Cluster” on page 160
•
“Task 3: Configure NetWorker Software as a Highly Available
Application” on page 161
•
“Task 4: Restore the Data” on page 162
•
“Task 5: Start the Cluster Software on Each Node” on page 163
This procedure assumes a worst-case scenario, where one node of a cluster
with two or more nodes loses contact and completely fails, followed shortly by
the remaining nodes completely failing.
Task 1: Install the Software
To install the software, on a primary node:
1. Configure the hardware and install the operating system.
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2. Install the AAM software. For detailed instructions, refer to the Legato
Automated Availability Manager Installation Guide.
3. Install the NetWorker software. For detailed instructions, refer to the
appropriate Legato NetWorker Installation Guide.
4. Make sure that the NetWorker client and server software are running
locally.
Task 2: Restore the Cluster
1. Determine the save set ID that contains the following cluster configuration
and system files:
If you do not know the save set ID, use the scanner device_path command
to determine its value, as follows:
scanner device_path > /tmp/savefile 2>&1
AIX
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•
/usr/bin/nw_ux.lc
•
$FT_DIR/config/*
•
$FT_DIR/log/*
•
$FT_DIR/<domain_name><node_name>
•
$FT_DIR/bin/envsh (envcsh for C-shell)
HP-UX
•
/opt/networker/bin/nw_ux.lc
•
$FT_DIR/config/*
•
$FT_DIR/log/*
•
$FT_DIR/<domain_name><node_name>
•
$FT_DIR/bin/envsh (envcsh for C-shell)
Linux
•
/usr/sbin/nw_ux.lc
•
$FT_DIR/config/*
•
$FT_DIR/log/*
•
$FT_DIR/<domain_name><node_name>
•
$FT_DIR/bin/envsh (envcsh for C-shell)
Note: $FT_DIR is the installation location for the AAM software.
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2. On the primary node, enter the scanner command to restore the following
configuration files:
scanner -S saveset_id device_path -x uasm -rv -i Y path_name
where the device_path is the platform configuration and system files listed
in step 1.
Task 3: Configure NetWorker Software as a Highly Available Application
On the primary node, configure the NetWorker software as a highly available
application:
1. Run the envsh script. For example:
AIX
cd /usr/lpp/LGTOlcxx/bin
. ./envsh (or source ./envcsh if using C shell)
HP-UX
cd /opt/LGTOlcxx/bin
. ./envsh (or source ./envcsh if using C shell)
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Linux
cd /opt/LGTOlcxx/bin
. ./envsh (or source ./envcsh if using C shell)
2. Run the networker.cluster script:
If you have already restored the nw_ux.lc file, answer No to the following
prompt:
Do you wish to automatically add site-specific values for:
NSR_SHARED_DISK_DIR and NSR_SERVICE_ID in
/AAM_ installation_ directory
Yes or No [Yes]? no
3. Start the cluster virtual server, as follows:
$FT_DIR/bin/ft_startup -domain domain_name
4. Use the AAM Console to start the NetWorker resource group.
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Task 4: Restore the Data
The procedures to restore the data on the primary and each of the remaining
nodes in the cluster differ. For more information, see the following sections:
•
“On the Primary Node” on page 162
•
“On Each of Remaining Node in the Cluster” on page 162
On the Primary Node
To restore data on the primary node:
1. Use the mmrecov command to restore the indexes, media database, and
resource files.
2. Use the recover command to recover the following initialization
directories:
AIX
•
/etc/rc*
HP-UX
•
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/etc/rc*
Linux
•
/etc/init.d
•
/etc/rc*.d
For detailed instructions on using the recover and mmrecov commands,
refer to the man pages or the Legato Command Reference Guide.
On Each of Remaining Node in the Cluster
To restore data on each of the remaining node in the cluster:
1. Install NetWorker software and run the NetWorker client.
2. Recover the data and software from recent backups or from the product
installation CD-ROMs.
3. Using the virtual NetWorker server, recover the following files:
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•
$FT_DIR/config/*
•
$FT_DIR/log/*
•
$FT_DIR/<domain_name>_<node_name>
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4. Recover or copy the following files from the active node:
AIX
•
/usr/bin/nw_ux.lc
•
$FT_DIR/bin/envsh (envcsh for C-shell)
HP-UX
•
/opt/networker/bin/nw_ux.lc
•
$FT_DIR/bin/envsh (envcsh for C-shell)
Linux
•
/usr/sbin/nw_ux.lc
•
$FT_DIR/bin/envsh (envcsh for C-shell)
For detailed instructions on using the recover and mmrecov commands,
refer to the man pages or the Legato Command Reference Guide.
Task 5: Start the Cluster Software on Each Node
On each of the remaining nodes in the cluster:
11
1. Start the cluster virtual server, as follows:
cd $FT_DIR/bin
. ./envsh
./ft_startup -domain domain_name
If the virtual server fails to start on the node because of an outdated sites
file, copy the following file from the active node:
$FT_DIR/config/domain_name_sites
2. Run the networker.cluster script:
If you have already restored or copied the nw_ux.lc file from the active
node in step 3, answer No to the following prompt:
Do you wish to automatically add site-specific values for:
NSR_SHARED_DISK_DIR and NSR_SERVICE_ID in
/AAM_ installation_ directory
Yes or No [Yes]? no
3. Repeat steps 1 and 2 for each node in the cluster.
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Renaming the Resource Directory
This section describes how to rename the resource directory. While performing
a disaster recovery on a shared disk, you may need to rename the resource
directory.
To rename the resource directory:
1. Use the AAM Console to stop the NetWorker resource group.
2. Use the AAM Console to activate and mount the following:
a. If using the Logical Volume Manager, activate the volume group by
bringing the logical volume group datasource online.
b. Mount the shared disk (that contains the shared nsr directory) by
bringing the shared disk datasource online.
Note: You can also activate and mount the logical volume group and the
shared disk using UNIX commands.
3. Move the newly recovered resource directory nsr/res.R to the current
resource directory, as follows:
mv /nsr_shared_mnt_pt/nsr/res /nsr_shared_mnt_pt/
nsr/res.old
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mv /nsr_shared_mnt_pt/nsr/res.R /nsr_shared_mnt_pt/
nsr/res
4. In the reverse order, take the data sources (logical volume group and the
shared disk) that you used in step 2 offline.
5. Use the AAM Console to start the NetWorker resource group.
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Chapter 12: HACMP for AIX Disaster Recovery
This chapter explains how to recover one or more computers in a High
Availability Cluster Multiprocessing for AIX (HACMP for AIX) 4.5
environment.
This chapter includes the following sections:
•
“Recovering a Single Node” on page 165
•
“Recovering an Entire Cluster” on page 166
For detailed installation and configuration instructions, refer to the following
documentation:
•
Legato NetWorker Installation Guide, AIX Version
•
Legato NetWorker Administrator’s Guide, UNIX Version
•
HACMP for AIX documentation
Recovering a Single Node
This section describes how to recover a failed node within a cluster. This
scenario assumes that the operating system on the participating nodes is intact
and will not be recovered.
Restoring a cluster following a disaster is similar to any NetWorker software
restoration. The important difference is that you must synchronize the data in
the cluster database.
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How to Recover a Single Node
To recover a single node:
1. Install the NetWorker software.
2. Start the NetWorker client.
3. From an unaffected node in the cluster, use the virtual NetWorker server
to restore the node's data and software from a recent backup.
4. From an unaffected node in the cluster, use the SMIT utility to synchronize
the cluster topology and resources.
Recovering an Entire Cluster
This section describes how to perform a complete cluster recovery including
reinstallation of the operating system on all nodes in the cluster.
Note: It is unlikely that all the nodes in a cluster would fail simultaneously; but
if this does occur, follow this procedure.
How to Perform a Cluster-Wide Recovery
Use the following tasks to perform a cluster-wide recovery:
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•
“Task 1: Install the Software” on page 166
•
“Task 2: Restore the Cluster Database” on page 166
•
“Task 3: Start the Cluster” on page 167
•
“Task 4: Restore the Data” on page 167
Task 1: Install the Software
To install the software on a primary node:
1. Configure the hardware and install the operating system.
2. Reinstall the HACMP for AIX software.
3. Install the NetWorker software.
Task 2: Restore the Cluster Database
To restore the cluster database:
1. From all nodes in the cluster, make sure that all cluster software is halted.
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2. From one node in the cluster:
a. Determine the save set ID that contains the following configuration
directories:
–
/etc/objres
–
/usr/es/sbin/cluster/etc/objres
–
/usr/es/sbin/cluster/etc/vg
Note: The configuration directories in the previous list are valid for
the HACMP Extended Scalability (HACMP/ES) version of HACMP.
The actual configuration directory path may vary depending on your
version of HACMP.
If you do not know the save set ID, use the scanner command to
determine its value, as follows:
scanner device_path > /tmp/savefile 2>&1
b. Use the scanner -S commands to restore the cluster database, as
follows:
scanner -S saveset_id device_path -x uasm -i Y -rv
/etc/objres
scanner -S saveset_id device_path -x uasm -i Y -rv
/usr/es/sbin/cluster/etc/objres
scanner -S saveset_id device_path -x uasm -i Y -rv
/usr/es/sbin/cluster/etc/vg
3. From the restored node in the cluster, use the SMIT utility to synchronize
the cluster topology and databases.
Task 3: Start the Cluster
To start the cluster:
1. Use the SMIT utility to bring up all nodes within the cluster.
2. Run the networker.cluster script on each node in the cluster.
3. Start the NetWorker resource group using the SMIT utility.
Task 4: Restore the Data
To restore the data from the primary node:
1. If you do not know the save set ID of the most recent bootstrap, use the
scanner -B command to find it, as follows:
scanner -B device_path
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Recovering an Entire Cluster
2. Use the mmrecov command to restore the media database and resource
files.
3. Complete the recovery of the resource database. In step 2, mmrecov
recovered the resource directory to a temporary directory named res.R.
This is because the resource database cannot be overwritten while the
NetWorker software is running. To complete the recovery of the resource
database:
a. Stop the NetWorker resource group using the SMIT utility.
b. Mount the shared disk containing the nsr directory.
c. Save a copy of the existing resource database, as follows:
mv /nsr/res /nsr/res.orig
d. Place the recovered resource database files into the res directory, as
follows:
mv /nsr/res.R /nsr/res
e. Unmount the shared disk containing the nsr directory.
f. Restart NetWorker resource group using the SMIT utility.
4. Use the nsrck -L7 command to restore the indexes.
5. Use the recover command to recover the initialization directories.
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Glossary
This glossary provides definitions for terms used in this guide.
ACL
An abbreviation for access control list. This is a list
that specifies the permissions assigned to a specific file
or directory.
To recover a file that has an associated ACL, you must
either be logged into the system as root, as
Administrator, or as the file’s owner.
active group
A NetWorker backup group that has its Autostart
attribute enabled.
administrator
The person normally responsible for installing,
configuring, and maintaining NetWorker software.
Administrators
group
A Windows NT and Windows 2000 user group whose
members have all the rights and abilities of users in
other groups, plus the ability to create and manage all
the users and groups in the domain. Only members of
the Administrators group can modify Windows NT
and Windows 2000 operating system files, maintain
the built-in groups, and grant additional rights to
groups.
agent
The term used to denote a cluster server. Also known
as a logical server (HP TruCluster), a package
(HP-UX), and a virtual server (Microsoft).
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Glossary
annotation
A comment that you associate with an archive save set
to help identify that data later. Annotations are stored
in the media index for ease of searching and are
limited to 1,024 characters.
archive
The process by which NetWorker software backs up
directories or files to an archive volume and then
grooms them to free disk space. When data is
archived, it is written to one or more storage volumes
and then marked so that it is never subject to
automatic recycling. You can delete the archived files
from the client, thus freeing disk space. See also
grooming.
archive clone pool
A pool composed exclusively of archive clone save
sets.
archive pool
A volume pool composed exclusively of archive save
sets. Archived save sets are in a different format than
regular backup save sets, and must be maintained on
separate media.
archive volume
A tape or other storage medium used to store
NetWorker archive data, as opposed to a backup
volume.
ASM
An abbreviation for application-specific module. An
ASM is a program that, when used in a directive,
specifies the way that a set of files or directories is to
be backed up and recovered. For example,
compressasm is a NetWorker directive used to
compress and decompress files.
ASM
specification
A directive that specifies how files or directories with
a matching pattern are backed up. This specification
appears in the format:
[+] asm: argument
For more information, refer to the nsr_5 man page or
the Legato Command Reference Guide.
attribute
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A feature of a resource. It is a service or information
that the resource provides.
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A code that is unique to your network that unlocks the
software for permanent use.
autochanger
A mechanism that uses a robotic arm to move media
among various components located in a device,
including slots, media drives, media access ports, and
transports. Autochangers automate media loading
and mounting functions during backup and recovery.
The term autochanger refers to a variety of robotic
libraries, including autoloader, carousel, datawheel,
jukebox, library, and near-line storage.
auto media
management
A feature that enables the storage device controlled by
the NetWorker server to automatically label, mount,
and overwrite a volume it considers unlabeled.
Volumes that are eligible for reuse are also
automatically recycled.
backup
The writing of saved data to a volume.
backup cycle
The period of time from one level full backup to the
next level full backup.
backup group
See group.
backup level
See level.
Backup Operators
group
A group of Microsoft Windows users who can log on
to a domain from a computer or a server, back it up,
and restore the data. Backup operators can also shut
down servers or computers.
backup volume
A tape or other storage medium used to store
NetWorker backup data, as opposed to an archive
volume.
base enabler code
See enabler code.
bootstrap
A save set that is essential for the NetWorker disaster
recovery procedures. The bootstrap is composed of
three components that reside on the NetWorker
server: the media database, the resource database, and a
server index.
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authorization
code
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Glossary
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172
browse policy
A policy that determines how long entries for backup
data remain in the client file index.
carousel
A tray or tape cartridge that holds multiple backup
volumes.
client
A computer that accesses the NetWorker server to
back up or recover files. Clients may be workstations,
computers, or fileservers.
client file index
A database of information maintained by the
NetWorker server that tracks every database object,
file, or filesystem backed up. The NetWorker server
maintains a single client index file for each client
computer.
client-initiated
backup
See manual backup.
clone
The NetWorker process used to make an exact copy of
saved data (save sets). You can clone individual save
sets or the entire contents of a backup volume.
Cloning is different from a simple copy operation
carried out on an operating system or hardware
device. It is indexed and tracked by NetWorker
software in both the client file index and the media
database.
clone pool
A pool of volumes composed exclusively of cloned
data. Three types of clone pools can be used: backup
clone, archive clone, and migration clone. Save sets of
different types (for example, archive and migration)
cannot be intermixed on the same clone volume.
clone volume
A volume belonging to a clone pool.
cluster
Two or more nodes that are connected and appear to
network users as a single, highly available system. A
highly available system allows the application
services to continue despite most hardware or
software failures.
connection port
The port NetWorker processes use to perform backup
and recovery sessions through a firewall.
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Glossary
To create a complete backup of a save set by merging
the most recent level 1 save set with its corresponding
full level save set. For more information, refer to the
nsrssc man page or the Legato Command Reference
Guide.
continued save
set
Data associated with a save set that is continued from
a previous volume. Continued save sets are created by
the backup server when large save sets are being
backed up, cloned, or archived to multiple volumes.
daemon
A program that lies dormant waiting for a specified
condition to occur.
datawheel
See autochanger.
DDS
An abbreviation for dynamic drive sharing, which
allows NetWorker software to recognize shared
drives.
device
1. A storage unit that reads from and writes to storage
volumes (see volume). A storage unit can be a tape
device, optical drive, autochanger, or file connected to
the server or storage node.
2. When DDS is enabled, refers to the access path to
the physical drive.
DFS
An abbreviation for Distributed File System root or
child node. DFS is a Microsoft add-on for Windows
NT 4.0 Server (Alpha or Intel) or Windows 2000 that
allows you to create a logical directory of shared
directories that span multiple machines across a
network.
DFS component
A DFS component is one of the following:
• A namespace for files and DFS links, called a DFS
root.
• A connection to a shared file or folder, called a DFS
child node
directed recovery
A recovery method used to recover data that
originated on one computer and re-create it on
another computer.
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Glossary
consolidate
Glossary
Glossary
directive
An instruction that directs the NetWorker software to
take special actions on a given set of files for a
specified client during a backup.
domain controller
A Microsoft Windows computer that stores directory
data and manages user interactions with a domain,
including logon, authentication, directory searches,
and access to other shared resources.
drive
When DDS is enabled, refers to the physical backup
object, such as a tape drive, disk, or file. See also device.
enabler code
A special code provided by Legato that activates the
software. The enabler code that unlocks the base
features for software you purchase is referred to as a
base enabler. Enabler codes for additional features or
products (for example, autochanger support) are
referred to as add-on enablers.
exit code
An indicator that specifies whether a backup or
recovery session succeeded. An exit code of zero (0)
indicates the session completed successfully. A
nonzero exit code indicates the session did not
complete successfully.
expiration date
The date when the volume changes from read/write
to read-only.
expired save set
A save set whose browse time has been reached;
therefore, it can no longer be browsed. In addition, the
save set has been removed from the client file index.
failover
In a cluster network, the process of relocating a
resource to its redundant or backup component, either
because of a hardware or software failure or for
administrative purposes.
file index
See client file index.
filesystem
1. A file tree that is on a specific disk partition or other
mount point.
2. The entire set of all files.
3. A method of storing files.
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Glossary
A system designed to prevent unauthorized access to
or from a private network. All messages entering or
leaving the intranet pass through the firewall, which
examines each message and blocks those that do not
meet the specified security criteria. There are several
types of firewall techniques. The NetWorker software
supports client backups from computers that are
protected by packet filtering.
fork
A subprocess the NetWorker software creates to
perform a requested operation. In instances where a
command uses a parallelism value, NetWorker
software creates multiple instances of that command.
Each instance of the command is identical to the
original command and is referred to as a subprocess.
Once each subprocess is created, they are run
simultaneously.
full backup
See level.
grooming
The NetWorker process of removing the original files
from a local disk after a successful archive operation.
group
A client or group of clients configured to start backing
up files to the NetWorker server at a designated time
of day.
highly available
system
A system that allows the application services to
continue despite a hardware or software failure. Each
cluster node has its own IP address. Each cluster node
also has private (local) resources or disks that are
available only to that machine.
inactivity timeout
An attribute that indicates the number of minutes
NetWorker software waits before determining that a
client is unavailable for backup.
incremental
See level.
jukebox
See autochanger.
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Glossary
firewall
Glossary
level
A measurement that determines how much data
NetWorker software saves during a scheduled or
manual backup.
Glossary
A full (f) backup backs up all files, regardless of
whether they have changed. Levels one through nine
[1-9] back up files that have changed since the last
lower numbered backup level. An incremental (incr)
backup backs up only files that have changed since the
last backup.
176
library
See autochanger.
license enabler
The enabler code that enables you to run a feature or
product.
Legato License
Manager
An application that manages the licenses for all Legato
products and features.
local cluster client
A NetWorker client that is not permanently bound to a
physical machine, but is instead managed by a cluster
manager. It can be bound to more than one physical
machine in the cluster and can own its own data disks.
It is also referred to as a logical or virtual client.
local host
The node on which the client or server program is
running.
logical server
The term used in conjunction with HP TruCluster to
denote a cluster server. Also known as an agent (Sun),
a package (HP-UX), and a virtual server (Microsoft).
LUS
An abbreviation for Legato User SCSI. The LUS
driver is used by Legato software products as a
proprietary device driver that sends arbitrary SCSI
commands to an autochanger.
manual backup
A backup that a user requests from the client’s save
program. The user specifies participating files,
filesystems, and directories. A manual backup does
not generate a bootstrap save set.
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Glossary
The physical storage medium to which backup data is
written. NetWorker software supports tape, magnetic
or optical disk, and filesystems as backup media. See
also volume.
media database
A database that contains indexed entries about the
storage volume location and the life cycle status of all
data and volumes the NetWorker server manages. See
also volume.
migration
The process of moving data from a local filesystem to
storage media in the migration store to free up disk
space on the local drive.
multiplexing
A NetWorker feature that permits data from more
than one save set to be simultaneously written to the
same storage device.
NDMP
An abbreviation for Network Data Management
Protocol, which is a storage management client/server
protocol for enterprise-wide backup of
network-attached storage. NetWorker software uses
NDMP to provide connections to computers with
NDMP data modules for tape operations, allowing a
significant reduction in network traffic.
near-line storage
See autochanger.
NetWorker client
See client.
NetWorker server
See server.
NetWorker
storage node
See storage node.
NFS client
A computer that can access files on a network file
system (NFS) server.
NFS server
A computer that contains exported filesystems that
NFS clients can access.
nonclone pool
Pools that contain data that has not been cloned.
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178
notification
A message generated and sent to the NetWorker
administrator about important NetWorker events.
online indexes
The databases located on the NetWorker server that
contain all the information pertaining to the client
backups (client file index) and backup volumes (media
database).
operator
The person who monitors the server status, loads
backup volumes into the server devices, and
otherwise executes the day-to-day NetWorker tasks.
override
A NetWorker feature that allows you to configure a
different backup level for a specific date listed in a
Schedule resource.
package
The term used by HP-UX to denote a cluster server.
Also known as an agent (Sun), logical server (HP
TruCluster), and virtual server (Microsoft).
packet filtering
A method of firewall protection that looks at each
packet entering or leaving the network and accepts or
rejects it based on user-defined rules. See also firewall.
parallelism
A NetWorker feature that enables the NetWorker
server to either back up save sets from several clients
or many save sets from one client at the same time.
Parallelism is also available during recovers.
pathname
A set of instructions to the operating system for
accessing a file. An absolute pathname tells how to find
a file beginning at the root directory and working
down the directory tree. A relative pathname tells how
to find the file starting where you are now.
physical cluster
client
A NetWorker client that is bound to a physical
machine in the cluster and can represent its own
resources (private or local). It can also be called the
physical client.
physical host
Any one of the nodes (or machines) that forms the
cluster.
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Glossary
A set of constraints that specify how long an entry can
remain in a client’s online file index. When a policy
expires, the save sets associated with that policy are
marked recyclable. Each Client resource uses two
policies: a browse policy and a retention policy.
pool
A feature that enables you to sort backup data to
selected volumes. A pool contains a collection of
backup volumes to which specific data has been
backed up.
probe
The process NetWorker software uses to determine the
directories or files to back up on each client.
purging
The process of deleting all entries for files on the
volume from the client file index, but allowing entries
for the save sets to remain in the media database.
recover
A recovery method that re-creates an image of the
client filesystems and database on the NetWorker
server.
recyclable save
set
A save set whose browse and retention policies have
been reached; therefore, the save set has been removed
from the media database.
recyclable volume
A volume whose data has passed both its browse and
retention policies and is now available for relabeling
and use by a NetWorker server or storage node.
Registry
A database of configuration information central to
Windows NT and Windows 2000 operations. It
centralizes all Windows settings and provides security
and control over system, security, and user account
settings.
remote device
A storage device that is attached to a NetWorker
storage node.
RPC
An abbreviation for remote procedure call, which is
the protocol the NetWorker server uses to perform
client requests over a network.
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Glossary
policy
Glossary
A component of the NetWorker software that
describes the NetWorker server and its clients.
Devices, schedules, clients, groups, and policies are
examples of NetWorker resources. Each resource
contains a list of attributes that define the parameters
to use for the specific NetWorker resource.
resource database
A database that contains information about each of the
configured backup server’s resources.
resource owner
The cluster (logical, not physical) host that owns the
resource. If a resource (for example, a shared disk) is
not owned by any virtual host, it is assumed to be
owned by the local host (physical node) that hosts the
resource.
retention policy
A policy that determines how long save set entries are
retained in the NetWorker server’s media database.
retrieve
The process of locating and copying back files and
directories that NetWorker software has archived.
retry mechanism
The action NetWorker software performs when client
operations fail. This situation might occur when the
rate of transmission is either low or nonexistent. By
using this mechanism, a previously failed operation
might be more successful. Another common situation
whereby a retry mechanism might succeed is when
the client is in a reboot cycle.
root
1. (UNIX only) The UNIX superuser account (with
user name “root” and user ID). By extension, the
privileged system-maintenance login on any
operating system.
Glossary
resource
2. (Windows NT/Windows 2000 and UNIX) The top
node of the system directory structure; the home
directory of the root user.
save set
180
A group of files or a filesystem from a single client
computer backed up onto storage media.
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Glossary
The process that merges a level 1 backup with the last
full backup of a save set to create a new full backup.
See also level.
save set ID
An internal identification number that NetWorker
software assigns to a save set.
save set recover
The recovery of specified save sets to the NetWorker
server.
save set status
The NetWorker attribute that indicates whether a
given save set is restorable, recoverable, or recyclable.
The save set status also indicates whether the save set
has been successfully backed up.
save stream
The data and save set information being written to a
storage volume during a backup. A save stream
originates from a single save set.
server
The computer on a network that runs the NetWorker
server software, contains the online indexes, and
provides backup and recovery services to the clients
and storage nodes on the same network.
server index
A database containing information about the server's
files that have been backed up during scheduled
backups. Also known as the server’s client file index.
service port
The port used by a server or storage node to listen for
backup and recovery requests from clients through a
firewall.
shared disk
The storage disk that is connected between multiple
nodes in the cluster.
shell prompt
A cue for input in a shell window where you enter a
command.
silo
A repository for holding hundreds or thousands of
volumes. Silo volumes are identified by barcodes, not
by slot numbers.
skip
A backup level in which designated files are not
backed up. See also level.
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Glossary
save set
consolidation
Glossary
Glossary
182
SMS
An abbreviation for system management software,
which is a Microsoft-based software installation
system that allows the wide-scale, automatic
installation of software products on clients from a
single remote server.
SNMP
An abbreviation for Simple Network Management
Protocol, which is a protocol that defines the
communication between a manager (sometimes called
a monitor or management station) and an object (the
item being managed). NetWorker software uses
SNMP to send messages to the administrator about
NetWorker events.
ssid
See save set ID.
staging
The process of moving data from one storage medium
to another, less costly medium, and later removing the
data from its original location.
stand-alone
In a cluster environment, if the NetWorker.clustersvr
file is missing at the binary location, the NetWorker
server will start in noncluster mode, also called
stand-alone mode. The stand-alone mode is
sometimes referred to as the server backing up itself.
stand-alone
device
A storage device that contains a single drive for backing
up data.
storage device
The hardware that reads and writes data during
backup, recovery, or other NetWorker operations.
storage node
A storage device physically attached to another
computer whose backup operations are administered
from the controlling NetWorker server.
System Reference
Manual (SRM)
console
The HP TruCluster utility used to manage cluster
nodes.
user groups
In the NetWorker software, refers to configuration
resources that are used to assign users to access
control groups and to configure the privileges
associated with those groups.
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Glossary
versions
The date-stamped collection of available backups for
any single file.
virtual cluster
client
A NetWorker client that is not permanently bound to a
physical machine, but is instead managed by a cluster
manager. It can be bound to more than one physical
machine in the cluster and can own its own data disks.
It is also referred to as a logical cluster client or a
virtual client.
virtual server
The term used by Microsoft to denote a cluster server.
Also known as an agent (Sun), a logical server (HP
TruCluster), and a package (HP-UX).
volume
A unit of storage media, such as a magnetic tape, an
optical disk, or a file. A storage device reads from and
writes to volumes, which can be physical units (for
example, a labeled tape cartridge) or logical units (for
example, optical media can store multiple volumes on
a single physical platter).
volume ID
The internal identification assigned to a backup
volume by NetWorker software.
volume name
The name you assign to a backup volume when it is
labeled.
volume pool
See pool.
Glossary
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Glossary
Glossary
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Index
A
AIX HACMP cluster, recovering 165
AIX, recovering AAM for AIX 157
application data
recovering on NetWorker client
UNIX 44
Windows 84
recovering on NetWorker server
NetWare 99
UNIX 39
Windows 78
recovering on storage node
UNIX 41
Windows 84
audience 15
autochanger
NetWare
resource, configuring 96
UNIX
resetting 34
resource, creating 34
Windows
removable storage disabled, restoring
with 68
removable storage enabled, restoring
with 80
resetting 74
Automated Availability Manager for AIX, HP-UX,
Linux
recovering a single node 157
recovering all nodes 159
renaming the resource directory 164
automated system recovery (ASR) on
Windows 53
B
backup
importance of scheduling
testing
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UNIX 39, 42, 45
Windows 81, 87
boot -file genvmunix, HP TruCluster
bootstrap
locating save set ID of
NetWare 97
UNIX 34
Windows 70
recovering
NetWare 97
UNIX 36
Windows 72
browse policy, Windows 69
142
C
chkdsk, (Windows 2000 or .NET) 132
client
See NetWorker client
client file indexes
recovering
NetWare 97
UNIX 38
Windows 76
clu_add_member, HP TruCluster 142
clu_create, HP TruCluster 150
clu_delete_member -m, HP TruCluster 142
cluster, (Windows 2000 or .NET)
cluster database definition 127
prerequisites for recovery 127
recovering a single node 129
recovering failed quorum disk 128
recovering multiple nodes 132
cluster, AAM for AIX, HP-UX, Linux
recovering a single node 157
recovering all nodes 159
renaming resource directory 164
cluster, HACMP for AIX
recovering a single node 165
recovering all nodes 166
cluster, HP TruCluster
prerequisites for recovery 139–140
185
Index
Index
C-C
recovering a single node 140
adding node 141
hardware mappings, verifying 141
partitioning boot drive 141
recovering unshared node date 142
removing/re-adding node 141
replacing hardware 141
recovering all nodes 143
configure cluster software 144
configure NetWorker software 146
hardware mappings, verifying 144
install NetWorker software 145
locating bootstrap 146
locating client file index 148
recovering bootstrap 147
recovering client file index 149
recovering the cluster data 150
re-creating the cluster 150
replacing hardware 144
cluster, HP-UX
recovering all nodes 154
recovering single node 153
cluster, Sun
prerequisites 135
recovering all nodes 136
recovering single node 135
cluster, Windows NT 4.0 Cluster
recovering all nodes 119
recovering MSCS configuration 117
recovering quorum disk 116
recovering shared disk 113
recovering single node 111
cmapplycomf, HP-UX cluster 155
cmdeleteconf, HP-UX cluster 155
cmgetconf, HP-UX cluster 155
cmhaltpkg, HP-UX cluster 156
cmmodpkg, HP-UX cluster 156
cmruncl, HP-UX cluster 155
cmrunnode, HP-UX cluster 153
commands
AAM for AIX, HP-UX, Linux
envsh 161, 163
scanner 160
scanner -S -x uasm -rv -i Y 161
HACMP for AIX
mmrecov 168
nrsck -L7 168
186
recover 168
scanner -B 167
scanner -S -x uasm -i Y -rv 167
HP TruCluster
boot -file genvmunix 142
clu_add_member 142
clu_create 150
clu_delete_member -m 142
dfsmgr -e 145
hwmgr -view 140, 144
inquire 147
jbconfig 146
mminfo -av -N 149
mminfo -mv 146
nsrck -L6 149
nsrim -X 149
nsrinfo 149
nsrjb -I 146
nsrjb -Inv -S -f 147
nsrjb -vHE 146
recover -c 142, 150–151
recover -S -iY 149
rmfdmn 142
scanner -B 147
sjiielm 146
HP-UX
cmapplycomf 155
cmdeleteconf 155
cmgetconf 155
cmhalpkg 156
cmmodpkg 156
cmruncl 155
cmrunnode 153
exchange 156
mount 156
newfs 155
scanner -B 154
umount 156
vgchange 155–156
LINUX
ielem 34
NetWare
dsrepair 90, 101, 103, 105–106, 109
install 90, 92, 103, 107
load NETUTIL 97
LOAD TSA 104–105, 108
ndir 90, 101, 105, 109
Legato NetWorker, Release 7.0
Disaster Recovery Guide
Index
D-D
Legato NetWorker, Release 7.0
Disaster Recovery Guide
nsrmmdbasm 74
ping 60, 65
recover -c 59
recover.exe 58
scanner 71
scanner -B 49, 71
sjiielm 69, 75
uasm 74
Windows 2000 or .NET cluster
chkdsk 132
net start clussvc 131, 133
net stop clussvc 130, 133
Windows NT 4.0
-fixquorum 124
regedit 123
computer data, recovering
See recovering
configuration files
recovering for NetWorker server
NetWare 99
UNIX 37–38
Windows 74
configuring NetWorker server
NetWare 96
UNIX 34
Windows 68
configuring operating system
NetWare 93
UNIX 28–30
Windows 65
conventions 16
customer feedback 18
D
daemons, shutting down NetWorker
data, recovering
See recovering
database, resource and media
bootstrap for
NetWare 97
UNIX 34, 36
Windows 70, 72
device
NetWare
configuring 96
UNIX
34
Index
netadmin 90, 102
nwadmin 90, 101–102, 105
nwconfig 90, 92, 103, 107
nwdown 99
partmgr 102
rights /T /S 109
scanner -B 97
UNIX
inquire 35
jbconfig 34
mminfo -avot 41, 44
mminfo -mv 35
mmrecov 36–37
mt 31
nsr_shutdown -a 34, 37
nsradmin 39, 42, 45
nsrck 36, 38
nsrck -L7 38
nsrd 34, 37
nsrexecd 34, 37
nsrjb -HE 38
nsrjb -l 34
nsrjb -lnv -S -f 35
nsrjb -lv 38
nsrjb -vHE 34
nsrmm -d 38
nwrecover 39, 41, 44
ping 31
scanner -B 35
sjiielm 34
Windows
inquire 71–72
jbconfig 48–49, 68, 75
mminfo -mv 54, 66
mminfo -s -mv 83
mmrecov 49–50, 68–69, 72, 74, 81
nslookup 60, 65
nsradmin 80, 86
nsrck 72
nsrck -L7 49, 77
nsrjb 75
nsrjb -lnv -S 48
nsrjb -lnv -S -f 71–72
nsrjb -lv 49
nsrjb -lv -S 48, 69, 75
nsrjb -vHE 48–49, 68, 74
nsrmm -d 73, 77
187
Index
E-I
configuring 34
testing 31
Windows
configuring 65
testing 65, 74
dfsmgr -e, HP TruCluster 145
disaster
definition 19
preparing for 21
recovery prerequisites 22
documentation, product 15
drive
replacing, NetWare 90
replacing, UNIX 27
replacing, Windows 52
drives, phantom 123
dsrepair, NetWare 90, 101, 103, 105–106, 109
Dynamic Host Configuration Protocol (DHCP)
database 87
E
Emergency repair disk
creating, Windows NT 57
using, Windows NT 59
end user data
See user data
envsh, AAM for AIX, HP-UX, Linux
exchangec, HP-UX cluster 156
161, 163
F
feedback, customer 18
file, legatomm 95
firewall support 175
-fixquorum, Windows NT 4.0
124
G
Index
gathering key information before a disaster
H
HACMP for AIX cluster
restoring a single node
188
22
restoring all nodes 166
hard drive
replacing, NetWare 90
replacing, UNIX 27
replacing, Windows 52
HP TruCluster
recovering a single node 140
recovery prerequisites 139
See also cluster, HP TruCluster
HP-UX Cluster
recovering all nodes 154
recovering single node 153
HP-UX, recovering AAM for HP-UX 157
hwmgr -view, HP TruCluster 140, 144
I
ielem, Linux 34
information before a disaster, gathering key 22
information, recovering
See recovering
inquire, HP TruCluster 147
inquire, UNIX 35
inquire, Windows 71–72
install command, NetWare 90, 92, 103, 107
installing
NetWorker client
UNIX 43
Windows 83
NetWorker server
NetWare 96
UNIX 33
Windows 67
NetWorker storage node
UNIX 41
Windows 83
operating system
UNIX 28–30, 92
Windows 62
IntraNetWare SYS Volume, recovering 105
introduction 19
inventory autochanger
UNIX 34
Windows 74
165
Legato NetWorker, Release 7.0
Disaster Recovery Guide
Index
J-N
mmrecov, UNIX 36–37
mmrecov, Windows 49–50, 68–69, 72, 74, 81
mount, HP-UX cluster 156
mt, UNIX 31
multiple disaster recoveries
performing in UNIX 26
performing in Windows 51
J
jbconfig, HP TruCluster 146
jbconfig, UNIX 34
jbconfig, Windows 48–49, 68, 75
jukebox
See autochanger
N
K
key information before a disaster, gathering
22
L
legatomm file 95
licensing and registration 18
limitations, Windows OEM recovery CD
Linux, recovering AAM for Linux 157
load NETUTIL, NetWare 97
LOAD TSA, NetWare 104–105, 108
locating, server’s bootstrap save set ID
NetWare 97
UNIX 34
Windows 70
133
net stop clussvc, (Windows 2000 or .NET)
53
53
netadmin, NetWare 90, 102
NetWare
legatomm file 95
locating bootstrap 97
NetWorker server recovery prerequisites 95
prerequisites summary 24
recovering
bootstrap 97
IntraNetWare SYS volume 105
NetWare 4.10 SYS volume 102
NetWare 4.11 SYS volume 105
NetWare 5.0 SYS volume 105
NetWorker server 94
operating system 91
operating system prerequisites 91
replicated NDS partition 102
recovering NDS data 100
renaming the NetWorker server configuration
files 99
replacing a hard drive 90
NetWorker client
installing
UNIX 43
Windows 83
recovering
UNIX 43
Windows 82
NetWorker server
configuring
NetWare 96
189
Index
media database
locating bootstrap for
NetWare 97
UNIX 34
Windows 70
Microsoft automated system recovery (ASR)
Microsoft cluster configuration, recovering,
Windows NT 4.0 117
Microsoft Cluster Server, recovering
Windows 2000 or .NET 127
Windows NT 4.0 111
mminfo -av -N, HP TruCluster 149
mminfo -avot, UNIX 41, 44
mminfo -mv, HP TruCluster 146
mminfo -mv, UNIX 35
mminfo -mv, Windows 54, 66
mminfo -s -mv, Windows 83
mmrecov, HACMP for AIX 168
130,
133
M
Legato NetWorker, Release 7.0
Disaster Recovery Guide
ndir, NetWare 90, 101, 105, 109
NDS data, recovering 100
NDS partition, recovering replicated 102
net start clussvc, (Windows 2000 or .NET) 131,
Index
Index
O-O
UNIX 34
Windows 68
installing
NetWare 96
UNIX 33
Windows 67
locating bootstrap save set ID
NetWare 97
UNIX 34
Windows 70
recovering
NetWare 94
UNIX 32
Windows 66
recovering configuration files
NetWare 99
UNIX 37–38
Windows 74
recovering user data on
NetWare 99
UNIX 39
Windows 78
testing backup and recovery
NetWare 101
UNIX 39
Windows 81
NetWorker storage node
installing
UNIX 41
Windows 83
recovering
UNIX 40
Windows 82
NetWorker Utilities program, NetWare
newfs, HP-UX cluster 155
nslookup, Windows 60, 65
nsr_shutdown -a, UNIX 34, 37
nsradmin, UNIX 39, 42, 45, 80, 86
nsrck -L6, HP TruCluster 149
nsrck -L7, HACMP for AIX 168
nsrck -L7, UNIX 38
nsrck -L7, Windows 49, 77
nsrck L7, Windows 77
nsrck, UNIX 36, 38
nsrck, Windows 72
nsrd, UNIX 34, 37
nsrexecd, UNIX 34, 37
190
nsrim -X, HP TruCluster 149
nsrinfo, HP TruCluster 149
nsrjb -HE, UNIX 38
nsrjb -I, HP TruCluster 146
nsrjb -Inv -S -f, HP TruCluster 147
nsrjb -Inv -S, Windows 48
nsrjb -Iv -S, Windows 48, 75
nsrjb -Iv, Windows 49
nsrjb -l, UNIX 34
nsrjb -lnv -S -f, UNIX 35
nsrjb -lnv -S -f, Windows 71–72
nsrjb -lv -S, Windows 69
nsrjb -lv, UNIX 38
nsrjb -vHE 48
nsrjb -vHE, HP TruCluster 146
nsrjb -vHE, UNIX 34
nsrjb -vHE, Windows 48–49, 68, 74
nsrjb, Windows 75
nsrmm -d, UNIX 38
nsrmm -d, Windows 73, 77
nsrmmdbasm, Windows 74
NT 4.0
repairing operating system with Emergency
Repair Disk 59
nwadmin, NetWare 90, 101–102, 105
nwconfig, NetWare 90, 92, 103, 107
nwdown, NetWare 99
nwrecover, UNIX 39, 41, 44
O
97
OEM recovery CD limitations
operating system
NetWare
recovering 91
UNIX
installing 28–30
recovering 28
testing 31
Windows
installing 62
recovering 60
testing 65
Windows NT 4.0
repairing 57
53
Legato NetWorker, Release 7.0
Disaster Recovery Guide
Index
P-R
P
packet-filtering, firewalls 175
partition, recovering a replicated NDS
partition 102
partmgr, NetWare 102
phantom drives 123
ping, UNIX 31
ping, Windows 60, 65
policies
browse, Windows 69
retention, Windows 69
preparing for a disaster 21
prerequisites
automated system recovery, Windows
Q
quorum disk
recovering, Windows 2000 or .NET 128
recovering, Windows NT 4.0 Cluster 116
R
53–
54
Legato NetWorker, Release 7.0
Disaster Recovery Guide
Index
hard drive, replacing
UNIX 27
Windows 52
HP TruCluster recovery 139
Microsoft cluster recovery, Windows 2000 or
.NET 127
Microsoft configuration recovery, Windows
NT 4.0 117
NetWorker client recovery
UNIX 43
Windows 82–83
NetWorker server recovery
NetWare 95
UNIX 32
Windows 66
NetWorker storage node recovery
UNIX 40
Windows 82–83
operating system recovery
NetWare 91
UNIX 28
Windows 60
Windows NT 4.0 57
summary of 22
Sun cluster recovery 135
product documentation 15
program, NetWorker Utilities for NetWare 97
recover -c, HP TruCluster 142, 150–151
recover -c, Windows 59
recover -S -iY, HP TruCluster 149
recover, HACMP for AIX 168
recover.exe, Windows consideration 58
recovering bootstrap
UNIX 36
Windows 72
recovering cluster nodes
AAM for AIX, HP-UX, Linux
all nodes 159
single node 157
HACMP for AIX
all nodes 166
single node 165
HP TruCluster
all nodes 143
single node 140
HP-UX cluster
all nodes 154
single node 153
Sun
all nodes 136
single node 135
Windows 2000 or .NET
multiple nodes 132
quorum disk 128
singles node 129
Windows NT 4.0
all nodes 119
cluster configuration 117
quorum disk 116
shared disk 113
single node 111
recovering configuration files
NetWorker server
UNIX 37–38
Windows 74
191
Index
Index
S-S
recovering IntraNetWare SYS volume 105
recovering multiple computers, consideration
Windows 51
recovering NDS data 100
recovering NetWare 4.10 SYS volume 102
recovering NetWare 4.11 SYS volume 105
recovering NetWare 5.0 SYS volume 105
recovering NetWorker client
UNIX 43
Windows 82
recovering NetWorker server
NetWare 94
UNIX 32
Windows 66
recovering NetWorker storage node
UNIX 40
Windows 82
recovering operating system
NetWare 91
UNIX 28
Windows 60–61
recovering, replicated NDS partition 102
recovery
summary steps
UNIX 26
Windows 48, 51
testing
UNIX 39, 42, 45
Windows 56, 81, 86
recovery limitations
Windows OEM CD 53
recovery prerequisites 22
summary of 22
recovery, Microsoft automated 53
regedit, Windows NT 4.0 123
registration, licensing and 18
regular backups, importance of 21
Remote Access List
Windows NT 57
removable storage autochanger, restoring 80
renaming NetWorker configuration files
NetWare 99
UNIX 37–38
Windows 74
renaming the resource directory, AAM for AIX,
HP-UX, Linux 164
repair disk, creating
192
Windows NT 57
repair disk, using
Windows NT 59
repairing Windows NT 4.0 OS 57
replacing hard drive
NetWare 90
UNIX 27
Windows 52
replacing the quorum disk
Windows NT 4.0 Cluster 116
replicated NDS partition, recovering
resetting autochanger
UNIX 34
Windows 74
resource database
locating bootstrap for
NetWare 97
UNIX 34
Windows 70
retention policy, Windows 69
rights /T /S, NetWare 109
rmfdmn, HP TruCluster 142
102
S
save set ID
locating for NetWorker server
NetWare 97
UNIX 34
Windows 70
scanner -B, HACMP for AIX 167
scanner -B, HP TruCluster 147
scanner -B, NetWare 97
scanner -B, UNIX 35
scanner -B, Windows 49, 71
scanner -S -x uasm -i Y -rv, HACMP for AIX 167
scanner -S -x uasm -rv -i Y, AAM for AIX, HP-UX,
Linux 161
scanner -S, HP-UX cluster 154
scanner, AAM for AIX, HP-UX, Linux 160
scanner, Windows 71
scheduled backups, importance of 21
server
configuring NetWorker
NetWare 96
UNIX 34
Windows 68
Legato NetWorker, Release 7.0
Disaster Recovery Guide
Index
T-W
installing NetWorker
NetWare 96
UNIX 33
Windows 67
recovering NetWorker
NetWare 94
UNIX 32
Windows 66
shutdown NetWorker, UNIX 34
services information test 17
setting
browse policy, Windows 69
retention policy, Windows 69
shutdown NetWorker server
UNIX 34
sjiielm, HP TruCluster 146
sjiielm, UNIX 34
sjiielm, Windows 69, 75
storage node
See NetWorker storage node
summary recovery steps
UNIX 26
Windows 48, 51
Sun cluster
restoring all nodes 136
restoring single node 135
support, technical 17
SYS volume, recovering
IntraNetWare 105
NetWare 4.10 102
NetWare 4.11 105
NetWare 5.0 105
system recovery, Microsoft automated 53
system state, cluster database definition
Windows 2000 or .NET 127
T
Legato NetWorker, Release 7.0
Disaster Recovery Guide
U
uasm, Windows 74
umount, HP-UX cluster 156
UNIX
configuring operating system 30
installing operating system 28–30
locating bootstrap 34
prerequisites summary 23
recovering bootstrap 36
recovering NetWorker client 43
recovering NetWorker server 32
recovering NetWorker storage node 40
recovering operating system 30
renaming NetWorker server configuration
files 37
summary of disaster recovery 26
user data
recovering on NetWorker client
UNIX 44
Windows 84
recovering on NetWorker server
NetWare 99
UNIX 39
Windows 78
recovering on storage node
UNIX 41
Windows 84
Utilities program, NetWare 97
V
vgchange, HP-UX cluster
155–156
W
What is a disaster? 19
Windows
automated system recovery (ASR) 53
installing operating system 62
locating bootstrap 70
NT 4.0
repairing OS with Emergency Repair
Index
technical support 17
testing backup and recovery
NetWare 101
UNIX 39, 42, 45
Windows 81, 87
testing OS
NetWare 94
UNIX 31
Windows 65
TruCluster, recovering 139
See also cluster, HP TruCluster
193
Index
W-W
Windows Cluster, 2000 or .NET
recovering multiple nodes 132
recovering quorum disk 128
recovering server 127
recovering single node 129
recovery prerequisites 127
Windows Cluster, NT 4.0
recovering a shared disk 113
recovering all nodes 119
recovering cluster configuration 117
recovering one cluster node 111
recovering quorum disk data 116
replacing the quorum disk 116
Windows Internet Naming Service (WINS)
database 87
Windows NT repair disk
creating 57
using 59
Index
Disk 59
performing multiple disaster recoveries 51
prerequisites summary 23
recovering a NetWorker server 66
recovering bootstrap 72
recovering NetWorker client 82
recovering NetWorker storage node 82
recovering operating system 61
renaming NetWorker server configuration
files 74
replacing a hard drive 52
setting
browse policy 69
retention policy 69
summary of disaster recovery 48, 51
194
Legato NetWorker, Release 7.0
Disaster Recovery Guide
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