HP StorageWorks 6000 HP StorageWorks VLS and D2D Solutions Guide (AG306-96028, - Page 51
HP Data Protector Application Overview, Symantec NetBackup Application Overview
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• 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 administer 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
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