Seagate ST39175LW Guía de usuario descargar pdf (Pagina 27)

Chapter 1, Introduction 17

Offhost Backup Overview

The primary goal of NetBackup ServerFree Agent is to move I/O processing off the

NetBackup client (application host) to an offhost backup agent such as a third-party copy

device. The backup agent sends the backup data to the storage device. Since backup

agents are unaware of logical organizations of data such as file systems and volume

managers, they require the data’s physical disk device addresses. This means that

NetBackup must “decompose” the backup data from file system or volume addresses to

physical addresses. This is accomplished by mapping the logical names in the file system

or volume manager to absolute physical addresses that can be understood by the backup

agent. The mapping information is then transmitted to a NetBackup media server

attached to a LAN.

File/Volume Mapping Methods

The mapping methods used by NetBackup ServerFree Agent are installed as part of the

NetBackup ServerFree Agent product. When a backup is initiated, the correct mapping

method is automatically selected by NetBackup, depending on whether the backup data

is configured over physical devices, logical volumes, or file systems.

NetBackup 4.0V ServerFree Agent System Administrator's Guide for Solaris

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Seagate ST39175LW Guía de usuario Pagina 27