Western Digital WD Arkeia RAx300T Installation and Configuration Guide - Manual (Page 17)

WD Arkeia Physical Appliance Installation and Configuration Guide
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4. BACKUPS AND RESTORES
This section will explain how to run backup jobs and restorations.
4.1. Backup Strategies
4.1.1. Backup Vocabulary
Terms used to define a “backup” are listed below:
Backup Job: the process by which source data are copied to disk
drives or tape drives that can be local (on the same machine as the
client data) or remote (on another machine)
Source Data: the files (and other specialized data structures, such as
a Windows Registry) to be backed up. The specification of source data
on a client computer is a “savepack”.
Clients: administrators install WD Arkeia Backup Agents on client
computers. Source data reside on client computers.
Servers: WD Arkeia Backup Servers communicate with WD Arkeia
Backup Agents, manage the target media, and drive the Web Graphical
User Interface of the WD Arkeia Network Backup. The WD Arkeia
Physical Appliance embeds a WD Arkeia Backup Server.
Target Media: the media on to which the backups are written, whether
tape or disk, are the target media or storage media. The specification of
the target media is a “drivepack”.
DiskStorage: when the target media is disk, we refer to the media as
DiskStorage. DiskStorage can be internal (when the disk is in the
appliance) or external (when the disk is connected through FC)
TapeStorage: when the target media is tape, we refer to the media as
TapeStorage. TapeStorage can be internal (when the tape drive is in
the appliance) or external (when the tape drive is connected through
SAS or FC)
Backup Set: the data created by a backup job. Backup Sets may span
storage units (e.g. tapes, disk drives) and may be replicated.
WD Arkeia Physical Appliance copies the data on clients to be backed up and
writes the data to target media whether internal disk (i.e. DiskStorage), internal
tape, or external tape (including virtual tape libraries). This guide covers only
backups to WD Arkeia Physical Appliance’s internal disk, though backups to
internal and external tape drives are also supported.
A backup job can be run immediately or at a scheduled time. An immediate
backup job is launched interactively and runs only once.