Symantec 7 manual NetBackup deduplication options, Type Description

		Introducing NetBackup deduplication 13
		About NetBackup deduplication
Table 1-1	NetBackup deduplication options
Type		Description
NetBackup Client		With NetBackup client-side deduplication, clients deduplicate
Deduplication Option		their backup data and then send it directly to the storage
		destination. A media server does not deduplicate the data.
		NetBackup Client Deduplication is a useful deduplication
		solution if a client host has unused CPU cycles or if the load
		balancing servers are overloaded.
		See “About NetBackup Client Deduplication” on page 24.
NetBackup Media Server		NetBackup clients send their backups to a NetBackup media
Deduplication Option		server, which deduplicates the backup data. A NetBackup media
		server hosts the NetBackup Deduplication Engine, which writes
		the data to the storage and manages the deduplicated data.
		NetBackup Media Server Deduplication is a useful deduplication
		solution if a client does not have enough CPU cycles to
		deduplicate its own data.
		See “About the NetBackup Media Server Deduplication Option”
		on page 19.
Appliance deduplication		The NetBackup OpenStorage option lets third-party vendor
		appliances function as disk storage for NetBackup.

The disk appliance provides the storage and it manages the storage. A disk appliance may provide deduplication functionality. NetBackup backs up and restores client data and manages the life cycles of the data.

Appliance deduplication is a storage optimization or reduction strategy. It reduces the storage that you may require.

See “How deduplication works” on page 14.

Conversely, NetBackup integrated deduplication reduces storage requirements and provides other benefits that a disk appliance deduplication solution cannot.

See “About NetBackup deduplication” on page 11.