Legato Networker ClientPak for MPE/iX Users Guide

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Chapter 4: Archiving and Retrieving Files
This chapter describes how to archive and retrieve files using the optional
NetWorker Archive Application.
Archiving Data
The backup and archive processes serve very different purposes. Backup is
short-term insurance against data loss. NetWorker keeps track of backups in
the online file index to enable you to recover lost or corrupted files quickly.
This online file index requires considerable disk space. Because archives
theoretically are kept forever, NetWorker does not track them in the online file
index–NetWorker only tracks archives in the online media index.
Archive is the process by which NetWorker backs up data to an archive volume.
Archive volumes are similar to backup volumes, except they do not have an
expiration date, which simply means that NetWorker will keep track of them
forever. Archive is a long-term strategy for preserving data.
Once files are safely stored on archive volumes, the archived files can be
removed from the local disk, freeing up space on your system. If you ever need
to restore archived files to your system, you can do so at any time.
If you have system administrator permissions, you can also archive MPE
volume sets. Although you can groom volume sets, be warned that you cannot
remove the accounts, groups, or pseudo files.
The best way to remember what an archive contains is to create a meaningful
annotation. An annotations is a comment that you associate with your archive
to help you identify data should you want to retrieve it. Annotations are stored
in the media index to make searching for archives easier. Annotations are
limited to 1024 characters.