Symantec 7 Introducing NetBackup deduplication

Introducing NetBackupdeduplication

This chapter includes the following topics:

■About NetBackup deduplication

About NetBackup deduplication

Theproprietary Symantec PureDisk deduplication technology powers NetBackup

integrateddeduplication. Symantec packaged PureDisk into modular components.

The components plug-in to NetBackup through the NetBackup OpenStorage

framework.

Withthese components, Symantec NetBackup provides the deduplication options

that let you deduplicate data everywhere, as close to the source of data as you

require.

Deduplicationeverywhere provides significant return on investment, as follows.

■Reduce the amount of data that is stored.

■Reduce backup bandwidth.

Reduced bandwidth can be especially important when you want to limit the

amountof data that a client sends over the network. Over the network can be

to a backup server or for image duplication between remote locations.

■Reduce backup windows.

■Reduce infrastructure.

Chapter

Contents

Main Symantec NetBackupDeduplication Guide Legal Notice Page Technical Support Contacting Technical Support Licensing and registration Customer service Maintenance agreement resources Additional enterprise services Contents Technical Support Chapter 1 Introducing NetBackup deduplication Chapter 2 Planning your deployment Chapter 3 Provisioning the storage Chapter 4 Installing deduplication Chapter 5 Configuring deduplication Chapter 6 Managing deduplication Chapter 7 Troubleshooting Chapter 8 Disaster recovery Chapter 9 Deduplication architecture Index Introducing NetBackup deduplication About NetBackup deduplication About NetBackup deduplication options Table 1-1 NetBackupdeduplication options DescriptionType How deduplication works Page Page Planning your deployment Planning your deduplication deployment Table 2-1 Deploymentoverview Where to find the informationDeployment task About the deduplication storage type About the NetBackup Media Server Deduplication Option Page Figure 2-1 NetBackup media server deduplication Table 2-2 describes the servers that are used for NetBackup deduplication. About deduplication servers About deduplication nodes About deduplication server requirements About media server deduplication limitations About NetBackup Client Deduplication About client deduplication host requirements About client deduplication requirements About client deduplication limitations About NetBackup Deduplication Engine credentials About the network interface for deduplication About firewalls and the deduplication hosts About scaling deduplication About compression and encryption About optimized duplication of deduplicated data Optimized deduplication copy requirements Page Page Optimized deduplication copy limitations About deduplication performance How file size may affect the deduplication rate Replacing the PureDisk Deduplication Option with Media Server Deduplication on the same host Migrating from PureDisk to the NetBackup Media Server Deduplication option Migrating from another storage type to deduplication Table 2-7 Migratingto NetBackup deduplication (continued) Provisioning the storage About provisioning the storage About deduplication storage requirements About deduplication storage capacity About the deduplication storage paths Page Page Installing deduplication About installing deduplication About the deduplication license key Licensing NetBackup deduplication 1 2 3 4 5 Page Table 4-1 Howto replace the deduplication storage server host (continued) Uninstalling media server deduplication Page Table 4-2 Disablemedia server deduplication (continued) Configuring deduplication Configuring deduplication Configuring a deduplication storage server 1 2 3 About deduplication pools Configuring a deduplication pool 1 2 3 Media server deduplication pool properties Table 5-2 Mediaserver deduplication pool properties (continued) DescriptionProperty Configuring a deduplication storage unit 2 3 Deduplication storage unit properties Deduplication storage unit recommendations Increase the Maximum concurrent jobs gradually Configure a client-to-server ratio Throttle traffic to the media servers Enabling client deduplication 4 5 Configuring backups Configuring optimized deduplication copy 1 2 Configuring optimized deduplication copy behavior Adding a load balancing server Page About the deduplication configuration file Editing the deduplication configuration file 1 2 3 pd.conf file settings Table 5-4 pd.conffile values (continued) ActionPossible valuesDefault valueSetting Warning: Caution: Reconfiguring the deduplication storage server and storage paths Page Managing deduplication Managing deduplication servers Changing deduplication storage server properties Deleting a deduplication storage server Determining the deduplication storage server state Getting the storage server configuration Editing a storage server configuration file 1 2 Setting the storage server configuration Deleting a load balancing server configuration file Removing a load balancing server 1 2 3 4 5 6 Viewing deduplication storage servers Viewing deduplication storage server attributes Resetting the deduplication registry 1 2 Managing NetBackup Deduplication Engine credentials Adding NetBackup Deduplication Engine credentials Changing NetBackup Deduplication Engine credentials Deleting credentials from a load balancing server Determining which media servers have deduplication credentials 2 3 Managing deduplication disk pools Changing deduplication disk pool properties 1 2 Changing the deduplication pool state Changing the deduplication disk volume state 1 2 Deleting a deduplication pool 2 3 4 Determining the deduplication pool state 2 3 Determining the deduplication disk volume state Viewing deduplication disk pools Monitoring deduplication activity Monitoring the deduplication rates Viewing disk reports Table 6-1 Diskreports DescriptionReport To view disk reports 1 >Reports > Disk Reports. 2 3 4 Monitoring deduplication processes Monitoring deduplication logs Deduplication configuration script log NetBackup Deduplication Engine log NetBackup Deduplication Manager logs Deduplication database log 1 2 3 4 PureDisk plug-in log Client deduplication proxy plug-in log Client deduplication proxy server log About VxUL logs Monitoring deduplication storage capacity and usage About deduplication capacity and usage reporting Table 6-3 Capacityand usage reporting (continued) DescriptionOption About deduplication container files Viewing capacity within deduplication container files Deleting backup images 1 2 Disabling deduplication for a client 1 Page Page Troubleshooting Troubleshooting installation issues Installation on SUSE Linux fails Troubleshooting configuration issues Cannot configure deduplication storage server 4 5 The disk pool wizard does not display a volume Troubleshooting operational issues Verify that the server has sufficient memory Backup jobs fail Volume state changes to DOWN when volume is unmounted Errors, delayed response, hangs Viewing disk errors and events Deduplication event codes and messages Table 7-1 Deduplicationevent codes and messages Page Table 7-1 Deduplicationevent codes and messages (continued) Page Page Disaster recovery Preparing for disaster Moving images off-site Recovering from a deduplication storage server disk failure Table 8-1 Processto recover from media server disk failure (continued) Recovering from a permanent deduplication storage server failure Page Recovering the storage server after NetBackup catalog recovery Page Deduplication architecture Deduplication server components Figure 9-1 Storage server deduplication components Table 9-1 describes the components. Table 9-1 NetBackupdeduplication components DescriptionComponent Table 9-1 NetBackupdeduplication components (continued) DescriptionComponent Media server deduplication process Page Page Deduplication client components Deduplication client backup process Page Page About deduplication fingerprinting Data removal process Index A B C D E F G H I L M R S T U