Symantec NetBackup™ Deduplication Guide - Personal Web Server

238 Pages·2012·1.99 MB·English

by  Symantec Corporation

Symantec NetBackup™
Deduplication Guide
UNIX, Windows, Linux
Release 7.5
21220065
Symantec NetBackup™ Deduplication Guide
The software described in this book is furnished under a license agreement and may be used
only in accordance with the terms of the agreement.
Documentation version: 7.5
PN: 21220065
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Contents
Technical Support .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Chapter 1 Introducing NetBackup deduplication .... . . . . . . . . . . . . . . . . . . . . . . . . 13
About NetBackup deduplication .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
About NetBackup deduplication options .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
How deduplication works .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
New features and enhancements for NetBackup 7.5 ... . . . . . . . . . . . . . . . . . . . . . . . . . 16
Chapter 2 Planning your deployment .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Planning your deduplication deployment ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
About the deduplication tech note ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
NetBackup naming conventions .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
About the deduplication storage destination .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
About the NetBackup Media Server Deduplication Option .... . . . . . . . . . . . . . . . . 23
About NetBackup deduplication servers ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
About deduplication nodes .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
About deduplication server requirements ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
About media server deduplication limitations .... . . . . . . . . . . . . . . . . . . . . . . . . . 28
About NetBackup Client Deduplication .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
About client deduplication requirements and limitations .... . . . . . . . . . . 30
About remote office client deduplication .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
About remote client deduplication data security ... . . . . . . . . . . . . . . . . . . . . . . . 31
About remote client backup scheduling .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
About NetBackup Deduplication Engine credentials ... . . . . . . . . . . . . . . . . . . . . . . . . 32
About the network interface for deduplication .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
About deduplication port usage .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
About deduplication compression .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
About deduplication encryption .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
About optimized synthetic backups and deduplication .... . . . . . . . . . . . . . . . . . . . . 35
About deduplication and SAN Client ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
About optimized duplication and replication .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
About MSDP optimized duplication within the same
domain .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
About NetBackup Auto Image Replication .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
About deduplication performance .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
8 Contents
How file size may affect the deduplication rate ... . . . . . . . . . . . . . . . . . . . . . . . . . 54
About deduplication stream handlers ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Deployment best practices ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Use fully qualified domain names .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
About scaling deduplication .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Send initial full backups to the storage server ... . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Increase the number of jobs gradually ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Introduce load balancing servers gradually ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Implement client deduplication gradually ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Use deduplication compression and encryption .... . . . . . . . . . . . . . . . . . . . . . . . 57
About the optimal number of backup streams .... . . . . . . . . . . . . . . . . . . . . . . . . . . 57
About storage unit groups for deduplication .... . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
About protecting the deduplicated data ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Save the deduplication storage server configuration .... . . . . . . . . . . . . . . . . . 59
Plan for disk write caching .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
How deduplication restores work .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Replacing the PureDisk Deduplication Option with Media Server
Deduplication on the same host ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Migrating from PureDisk to the NetBackup Media Server
Deduplication option .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Migrating from another storage type to deduplication .... . . . . . . . . . . . . . . . . . . . . 62
Chapter 3 Provisioning the storage .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
About provisioning the deduplication storage .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
About deduplication storage requirements ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
About support for more than 32-TB of storage .... . . . . . . . . . . . . . . . . . . . . . . . . . 68
About deduplication storage capacity ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
About the deduplication storage paths .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
Do not modify storage directories and files ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69
About adding additional storage .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
About volume management for NetBackup deduplication .... . . . . . . . . . . . . . . . . 70
Chapter 4 Licensing deduplication .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
About licensing deduplication .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
About the deduplication license key .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Licensing NetBackup deduplication .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
Chapter 5 Configuring deduplication .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
Configuring NetBackup media server deduplication .... . . . . . . . . . . . . . . . . . . . . . . . . 76
Configuring NetBackup client-side deduplication .... . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Configuring a NetBackup deduplication storage server ... . . . . . . . . . . . . . . . . . . . . . 79
Contents 9
About NetBackup deduplication pools ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Configuring a deduplication disk pool ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Media server deduplication pool properties ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Configuring a deduplication storage unit ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Deduplication storage unit properties ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
Deduplication storage unit recommendations .... . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Enabling deduplication encryption .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Configuring optimized synthetic backups for deduplication .... . . . . . . . . . . . . . 89
About configuring optimized duplication and replication
bandwidth .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Configuring MSDP optimized duplication copy behavior ... . . . . . . . . . . . . . . . . . . 91
Configuring a separate network path for MSDP optimized
duplication .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Configuring optimized duplication of deduplicated data ... . . . . . . . . . . . . . . . . . . . 94
About the replication topology for Auto Image Replication .... . . . . . . . . . . . . . . 97
Configuring a target for MSDP replication .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Viewing the replication topology for Auto Image Replication .... . . . . . . . . . . 100
Sample volume properties output for MSDP replication .... . . . . . . . . . . . 101
About the storage lifecycle policies required for Auto Image
Replication .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
Customizing how nbstserv runs duplication and import jobs
... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Creating a storage lifecycle policy ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
Storage Lifecycle Policy dialog box settings ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
Adding a storage operation to a storage lifecycle policy ... . . . . . . . . . . . . 108
About backup policy configuration .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Creating a policy using the Policy Configuration Wizard .... . . . . . . . . . . . . . . . . 111
Creating a policy without using the Policy Configuration Wizard .... . . . . 111
Enabling client-side deduplication .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Resilient Network properties ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Resilient connection resource usage .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 115
Specifying resilient connections .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116
Seeding the fingerprint cache for remote client-side
deduplication .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
Adding a deduplication load balancing server ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117
About the pd.conf configuration file for NetBackup
deduplication .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
pd.conf file settings for NetBackup deduplication .... . . . . . . . . . . . . . . . . . . 119
Editing the pd.conf deduplication file ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
About the contentrouter.cfg file for NetBackup deduplication .... . . . . . . . . . 127
About saving the deduplication storage server configuration .... . . . . . . . . . . 128
Saving the deduplication storage server configuration .... . . . . . . . . . . . . . . . . . . 129
Editing a deduplication storage server configuration file ... . . . . . . . . . . . . . . . . 129
10 Contents
Setting the deduplication storage server configuration .... . . . . . . . . . . . . . . . . . . 131
About the deduplication host configuration file ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Deleting a deduplication host configuration file ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Resetting the deduplication registry ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
Configuring deduplication log file timestamps on Windows .... . . . . . . . . . . . . 133
Setting NetBackup configuration options by using bpsetconfig ... . . . . . . . . 134
Chapter 6 Monitoring deduplication activity .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Monitoring the deduplication rate ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
Viewing deduplication job details ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 138
Deduplication job details ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 139
About deduplication storage capacity and usage reporting .... . . . . . . . . . . . . . 141
About deduplication container files ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Viewing storage usage within deduplication container files ... . . . . . . . . . . . . . 143
Viewing disk reports ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
Monitoring deduplication processes ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Reporting on Auto Image Replication jobs ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Chapter 7 Managing deduplication .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Managing deduplication servers ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Viewing deduplication storage servers ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
Determining the deduplication storage server state ... . . . . . . . . . . . . . . . . . 150
Viewing deduplication storage server attributes ... . . . . . . . . . . . . . . . . . . . . . . 151
Setting deduplication storage server attributes ... . . . . . . . . . . . . . . . . . . . . . . . 152
Changing deduplication storage server properties ... . . . . . . . . . . . . . . . . . . . 153
Clearing deduplication storage server attributes ... . . . . . . . . . . . . . . . . . . . . . 154
About changing the deduplication storage server name or storage
path .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Changing the deduplication storage server name or storage
path .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 155
Removing a load balancing server ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 157
Deleting a deduplication storage server ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 158
Deleting the deduplication storage server configuration .... . . . . . . . . . . 159
About shared memory on Windows deduplication storage
servers ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
Managing NetBackup Deduplication Engine credentials ... . . . . . . . . . . . . . . . . . . 160
Determining which media servers have deduplication
credentials ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 160
Adding NetBackup Deduplication Engine credentials ... . . . . . . . . . . . . . . . 160
Changing NetBackup Deduplication Engine credentials ... . . . . . . . . . . . . 161
Deleting credentials from a load balancing server ... . . . . . . . . . . . . . . . . . . . . 161
Managing deduplication disk pools ... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161