Symantec 7 manual Media server deduplication process, Component Description

	Deduplication architecture 111
	Media server deduplication process
Table 9-1	NetBackup deduplication components (continued)
Component	Description
NetBackup	The deduplication manager is one of the storage server core
Deduplication	components. The deduplication manager maintains the
Manager	configuration and controls internal processes, optimized
	duplication, security, and event escalation.
	The deduplication manager binary file name is spad. The spad
	process appears as the NetBackup Deduplication Manager in the
	NetBackup Administration Console.
Catalog plug-in	The catalog plug-in implements a standardized catalog API, which
	lets the NetBackup Deduplication Engine communicate with the
	back-end database process. The catalog plug-in translates
	deduplication engine catalog calls into the calls that are native to
	the back-end database.
Deduplication	The deduplication database stores and manages the metadata of
database	deduplicated files. The metadata includes a unique fingerprint
	that identifies the file’s content. The metadata also includes
	information about the file such as its owner, where it resides on
	a client, when it was created, and other information.
	NetBackup uses the PostgresSQL database for the deduplication
	database.
	You can use the NetBackup bpps command to view the database
	process (postgres).
	The deduplication database is separate from the NetBackup
	catalog. The NetBackup catalog maintains the usual NetBackup
	backup image information.
	On Windows systems, NetBackup creates a purediskdbuser
	account for database management.

Media server deduplication process

Figure 9-2shows the backup process when a media server deduplicates the backups. The destination is a media server deduplication pool. A description follows.