Seagate ST39175LW Betriebsanweisung PDF herunterladen (Seite 29)

Chapter 1, Introduction 19

Offhost Backup Overview

Third-Party Copy Device

Choose this option if processing time on the NetBackup client is critical and off-loading

backup processing to a third-party copy device may save time. Note that multiple data

streams and multiplexing are not supported.

Figure 7 shows the basic components used in the Third-Party Copy Device method. A

third-party copy device (not a component of NetBackup) handles the backup data

movement.

Figure 7. Third-Party Copy

1. On LAN, client backup is initiated by master server, which tells the client to

map the frozen image data.

2. On LAN, client sends the mapping information to the media server.

3. Media server sends third-party copy commands to the third-party copy

device over the SAN.

4. Third-party copy device reads the client data from the disk over the SAN.

5. Third-party copy device sends data across the SAN to storage device.

Third-party

copy device

NetBackup

master server

storage

NetBackup

client

NetBackup

media server

Disk containing

client data

LAN

SAN

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

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Seagate ST39175LW Betriebsanweisung Seite 29