Hp Data Protector Application Overview; Symantec Netbackup Application Overview - HP StorageWorks 12000 - Virtual Library System EVA Gateway Manual

• Symantec NetBackup

HP Data Protector Application Overview

The Data Protector cell is a network environment that includes a Cell Manager and client systems that
run agents. Client systems are imported into a cell and belong to a single Cell Manager. Multiple
cells may exist, each with their own Cell Manager. This environment may be managed by a single
Manager of Managers or "MoM."
• Cell Manager: the main system in the cell. The Cell Manager is the "traffic cop" that controls the
activities and contains the Internal Database (IDB) within the Data Protector cell. It is not necessary
to administer the backup and restore activities directly from the Cell Manager itself, because any
client within the cell (as supported) can connect to the Cell Manager over the network and be
used to administrate the activities of the cell.
• Disk Agent: install the Disk Agent on client systems you want to back up. The Disk Agent reads or
writes data from a disk on the system and sends or receives data from the Media Agent. The Disk
Agent is also installed on the Cell Manager, allowing you to back up data on the Cell Manager,
the Data Protector configuration, and the IDB.
• Media Agent: (For servers that have direct access to tape drives.) During a backup session, the
Media Agent receives data from the Disk Agent and sends it to the tape device (which can be
directly attached or allocated over a SAN). During a restore session, the Media Agent locates
data on the backup medium and sends it to the Disk Agent. The Disk Agent then writes the data
to the disk. The Media Agent also manages the robotics control of a library. If a system has both
the client agent and the media agent installed then it can perform LAN-free backups.

Symantec NetBackup Application Overview

Symantec NetBackup Enterprise Server is based on a client/server architecture, and comprises several
distinct components:
• Master server: The master server (one per storage domain) manages data protection operations.
The NetBackup master server is responsible for containing the backup configurations and policies,
running the scheduler that initiates automated backups, maintaining catalogs that track the location
and contents of all backups, communicating with media servers to initiate backup and restore
processes, and providing both a command line interface and a graphical user interface to admin-
ister NetBackup.
• Enterprise Media Manager server: NetBackup Enterprise Server 6.0 introduced the Enterprise
Media Manager (EMM) server, which centrally manages Media Manager data that had previously
been distributed across multiple media servers. You can only have one EMM server per storage
domain. The master server can also be designated as the EMM server. The NetBackup EMM
server is responsible for managing a consolidated media and device database for the NetBackup
storage domain and maintaining run-time status information, NDMP credentials, and a managed
server list.
• Media server: A media server can be any standalone server running NetBackup server software
that receives requests for backup and restore operations from the master server. (A master server
can also be configured as a media server.) A storage domain can contain multiple media servers.
Media servers communicate with the master server and EMM server to initiate backup and restore
operations on its attached storage devices, communicate with NetBackup clients during a backup
or restore operation, monitor the status of storage devices, and provide robotic control.
• Client: NetBackup clients are servers that have NetBackup client software installed. A client performs
backups through a media server (over the LAN if the media server is running a separate server or
directly as LAN-free backup if the media server is in the client server).
• Storage Unit: A NetBackup storage unit is a storage device attached to a NetBackup server. A
storage unit consists of the media server and tape devices where NetBackup stores files and data.
HP StorageWorks VLS and D2D Solutions Guide 51