Symantec NETBACKUP 7 - Manual (Page 112)

Figure 9-2 Deduplication to a media server deduplication pool
nbjm bpbrm
bptm
Deduplication storage server
Master server
Client A
PureDisk
plug-in
NetBackup
Deduplication
Engine
Control path
bpbkar
Media server deduplication pool
Data path
Client B
bpbkar
PureDisk plug-in
Load balancing server
bptm
The following list describes the backup process when a media server deduplicates
the backups and the destination is a media server deduplication pool:
■ The NetBackup Job Manager (
nbjm
) starts the Backup/Restore Manager (
bpbrm
)
on a media server.
■ The Backup/Restore Manager starts the bptm process on the media server and
the
bpbkar
process on the client.
■ The Backup/Archive Manager ( bpbkar ) generates the backup images and moves
them to the media server
bptm
process.
This example shows both a deduplication storage server and a load balancing
server. The storage server both deduplicates data and manages the storage.
■ The
bptm
process moves the data to the PureDisk plug-in.
■ The PureDisk plug-in retrieves a list of fingerprints from the last full backup
for the client from the NetBackup Deduplication Engine. The list is used as a
cache so the plug-in does not have to request each fingerprint from the engine.
■ The PureDisk plug-in performs file fingerprinting calculations.
■ The PureDisk plug-in compares the file fingerprints and the segment
fingerprints against the fingerprint list it its cache.
Deduplication architecture
Media server deduplication process 112