Veritas Netbackup Global Data Manager - VERITAS NetBackup White Paper

As also shown in Figure 2, devices configured on the media servers in the storage domain become additional network
storage units for backup and restore operations. When clients have large amounts of data, making them media servers is
also an effective way of reducing their backup time and lowering network traffic.
The actual location of the backup images in a NetBackup storage domain is totally transparent to NetBackup administrators
and users. The Media Manager component of VERITAS NetBackup resides on each NetBackup server and manages secondary
storage media and the peripheral devices on those servers.
NetBackup storage domains provide many advanced high availability features that ensure continuous operations in
NetBackup environments. For example, if a storage unit (robotics or tape device) on any of the NetBackup servers in the
storage domain goes down, the NetBackup master can automatically route the backups to another storage unit in the
storage domain. If a media server crashes, another media server can take over the backup operations. If scratch media in the
primary storage unit is unavailable, NetBackup can route the backup to another local storage unit or a storage unit
connected to another NetBackup server in the storage domain. VERITAS also recommends VERITAS Cluster Server , a high
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availability software product, to protect the NetBackup master in case of hardware or system failure. All of these features
ensure that all data in a NetBackup storage domain is protected and quickly recoverable in the event of a failure.

VERITAS NetBackup Global Data Manager

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In environments where multiple local or remote NetBackup storage domains are implemented, VERITAS NetBackup Global Data
Manager (GDM) may be used to greatly simplify backup administration tasks. Global Data Manager is an optional software
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layer that provides centralized management for multiple NetBackup storage domains across a corporate campus or around
the world.
Figure 3: NetBackup Global Data Manager architecture.
P a g e 6 V E R I TA S N e t B a c k u p R e l e a s e 3 . 4 Te c h n i c a l O v e r v i e w w w w . v e r i t a s . c o m