Symantec 7 About compression and encryption, About optimized duplication of deduplicated data

28Planning your deployment

About compression and encryption

■For the initial full backups of your clients, use the deduplication storage server. For subsequent backups, use load balancing servers.

Do not expect the deduplication storage server to be the media server that is used for restores to that client. If a media server deduplicates a client backup, your restore settings may require that the media server also be used for restores to that client.

■Enable client-side deduplication gradually.

If a client cannot tolerate the deduplication processing workload, be prepared to move the deduplication processing back to a server.

See “About deduplication performance” on page 32.

About compression and encryption

For compression or encryption, Symantec recommends that you enable them so they occur during the NetBackup deduplication process. If you compress or encrypt the data before it is deduplicated, deduplication rates are low.

See “About the deduplication configuration file” on page 60.

See “Editing the deduplication configuration file” on page 60.

See “pd.conf file settings” on page 61.

About optimized duplication of deduplicated data

Optimized duplication of deduplicated data reduces the amount of data that is transmitted over your network. Therefore, you can use optimized duplication for off-site storage of data for disaster recovery. It can improve recovery times and minimize the use of off-site tape storage.

Only the unique data segments are transferred.

See “Configuring optimized deduplication copy” on page 57.

Optimized deduplication copy requirements

Figure 2-3shows a source deduplication node and a destination deduplication node for optimized deduplication copy. The requirements description follows the figure.