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Terminology

4 NetBackup ServerFree Agent System Administrator’s Guide

Terminology

This section introduces terms used with NetBackup 4.5 ServerFree Agent.

Backup agent (see also Third-Party Copy Device)

A general term for the host that manages the backup on behalf of the NetBackup client. In

NetBackup 4.5, this is either the NetBackup media server or a third-party copy device.

BCV

The mirror disk in an EMC primary-mirror array configuration (see mirror). BCV stands

for “Business Continuance Volume.”

Bridge

In a SAN network, a bridge connects SCSI devices to Fibre Channel. A third-party copy

device can be implemented as part of a bridge or as part of other devices. Note that not all

bridges function as third-party copy devices.

BusinessCopy

One of three frozen image methods included in the Extended Frozen Image Services

(Array Integration) option. BusinessCopy is for making frozen images of client data on

HP disk arrays.

Copy manager (see Third-Party Copy Device)

Data movement

A copy operation as performed by a third-party copy device or NetBackup media server.

Disk group

A configuration of disks to create a primary-mirror association, using commands unique

to the disks’ vendor. See mirror and volume group.

Extent

A contiguous set of disk blocks allocated for a file and represented by three values: device

identifier, starting block address (offset in the device) and length (number of contiguous

blocks). The mapping methods in ServerFree Agent determine the list of extents and send

the list to the backup agent.

Fibre channel

A type of high-speed network composed of either optical or copper cable and employing

the Fibre Channel protocol. NetBackup 4.5 ServerFree Agent supports both arbitrated

loop and switched fabric (switched fibre channel) environments.

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Seagate ST39175LW Anleitung zur Fehlerbehebung Seite 18