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authorGerald W. Carter <jerry@samba.org>2008-04-22 10:09:40 -0500
committerGerald W. Carter <jerry@samba.org>2008-04-23 08:47:48 -0500
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+<?xml version="1.0" encoding="iso-8859-1"?>
+<!DOCTYPE chapter PUBLIC "-//Samba-Team//DTD DocBook V4.2-Based Variant V1.0//EN" "http://www.samba.org/samba/DTD/samba-doc">
+<chapter id="Backup">
+<chapterinfo>
+ &author.jht;
+</chapterinfo>
+
+<title>Backup Techniques</title>
+
+<sect1>
+<title>Features and Benefits</title>
+
+<para>
+<indexterm><primary>backup</primary></indexterm>
+<indexterm><primary>UNIX system files</primary></indexterm>
+<indexterm><primary>system tools</primary></indexterm>
+<indexterm><primary>Samba mailing lists</primary></indexterm>
+The Samba project is over 10 years old. During the early history
+of Samba, UNIX administrators were its key implementors. UNIX administrators
+use UNIX system tools to backup UNIX system files. Over the past
+4 years, an increasing number of Microsoft network administrators have
+taken an interest in Samba. This is reflected in the questions about backup
+in general on the Samba mailing lists.
+</para>
+
+</sect1>
+
+<sect1>
+<title>Discussion of Backup Solutions</title>
+
+<para>
+<indexterm><primary>Meccano set</primary></indexterm>
+<indexterm><primary>training course</primary></indexterm>
+During discussions at a Microsoft Windows training course, one of
+the pro-UNIX delegates stunned the class when he pointed out that Windows
+NT4 is limiting compared with UNIX. He likened UNIX to a Meccano set
+that has an unlimited number of tools that are simple, efficient,
+and, in combination, capable of achieving any desired outcome.
+</para>
+
+<para>
+<indexterm><primary>networking advocates</primary></indexterm>
+<indexterm><primary>clear purpose preferred</primary></indexterm>
+One of the Windows networking advocates retorted that if she wanted a
+Meccano set, she would buy one. She made it clear that a complex single
+tool that does more than is needed but does it with a clear purpose and
+intent is preferred by some like her.
+</para>
+
+<para>
+<indexterm><primary>due diligence</primary></indexterm>
+<indexterm><primary>research</primary></indexterm>
+<indexterm><primary>backup solution</primary></indexterm>
+Please note that all information here is provided as is and without recommendation
+of fitness or suitability. The network administrator is strongly encouraged to
+perform due diligence research before implementing any backup solution, whether free
+software or commercial.
+</para>
+
+<para>
+A useful Web site I recently stumbled across that you might like to refer to
+is located at <ulink noescape="1" url="http://www.allmerchants.com/Software/Backup_Software/">
+www.allmerchants.com</ulink>.
+</para>
+
+<para>
+The following three free software projects might also merit consideration.
+</para>
+
+ <sect2>
+ <title>BackupPC</title>
+
+
+ <para>
+ <indexterm><primary>BackupPC</primary></indexterm>
+<indexterm><primary>rsync</primary></indexterm>
+<indexterm><primary>rsyncd</primary></indexterm>
+ BackupPC version 2.0.0 has been released on <ulink url="http://backuppc.sourceforge.net">SourceForge</ulink>.
+ New features include support for <command>rsync/rsyncd</command> and internationalization of the CGI interface
+ (including English, French, Spanish, and German).
+ </para>
+
+ <para>
+<indexterm><primary>BackupPC</primary></indexterm>
+<indexterm><primary>laptops</primary></indexterm>
+<indexterm><primary>SMB</primary></indexterm>
+<indexterm><primary>smbclient</primary></indexterm>
+<indexterm><primary>tar</primary></indexterm>
+<indexterm><primary>rsh</primary></indexterm>
+<indexterm><primary>ssh</primary></indexterm>
+<indexterm><primary>rsync</primary></indexterm>
+ BackupPC is a high-performance Perl-based package for backing up Linux,
+ UNIX, and Windows PCs and laptops to a server's disk. BackupPC is highly
+ configurable and easy to install and maintain. SMB (via smbclient),
+ <command>tar</command> over <command>rsh/ssh</command>, or <command>rsync/rsyncd</command>
+ are used to extract client data.
+ </para>
+
+ <para>
+<indexterm><primary>RAID</primary></indexterm>
+<indexterm><primary>local disk</primary></indexterm>
+<indexterm><primary>network storage</primary></indexterm>
+ Given the ever-decreasing cost of disks and RAID systems, it is now
+ practical and cost effective to backup a large number of machines onto
+ a server's local disk or network storage. This is what BackupPC does.
+ </para>
+
+ <para>
+ Key features are pooling of identical files (big savings in server disk
+ space), compression, and a comprehensive CGI interface that allows users
+ to browse backups and restore files.
+ </para>
+
+ <para>
+<indexterm><primary>GNU GPL</primary></indexterm>
+ BackupPC is free software distributed under a GNU GPL license.
+ BackupPC runs on Linux/UNIX/freenix servers and has been tested
+ on Linux, UNIX, Windows 9x/Me, Windows 98, Windows 200x, Windows XP, and Mac OSX clients.
+ </para>
+
+ </sect2>
+
+ <sect2>
+ <title>Rsync</title>
+
+ <para>
+<indexterm><primary>rsync</primary></indexterm>
+<indexterm><primary>ftp</primary></indexterm>
+<indexterm><primary>http</primary></indexterm>
+<indexterm><primary>scp</primary></indexterm>
+<indexterm><primary>rcp</primary></indexterm>
+<indexterm><primary>checksum-search</primary></indexterm>
+ <command>rsync</command> is a flexible program for efficiently copying files or
+ directory trees.</para>
+
+ <para><command>rsync</command> has many options to select which files will be copied
+ and how they are to be transferred. It may be used as an
+ alternative to <command>ftp, http, scp</command>, or <command>rcp</command>.</para>
+
+ <para>
+<indexterm><primary>remote-update protocol</primary></indexterm>
+<indexterm><primary>transfer differences</primary></indexterm>
+<indexterm><primary>differences</primary></indexterm>
+ The rsync remote-update protocol allows rsync to transfer just
+ the differences between two sets of files across the network link,
+ using an efficient checksum-search algorithm described in the
+ technical report that accompanies the rsync package.</para>
+
+ <para>Some of the additional features of rsync are:</para>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Support for copying links, devices, owners, groups, and permissions.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Exclude and exclude-from options are similar to GNU tar.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ A CVS exclude mode for ignoring the same files that CVS would ignore.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Can use any transparent remote shell, including rsh or ssh.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Does not require root privileges.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Pipelining of file transfers to minimize latency costs.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Support for anonymous or authenticated rsync servers (ideal for
+ mirroring).
+ </para>
+ </listitem>
+ </itemizedlist>
+
+ </sect2>
+
+ <sect2>
+ <title>Amanda</title>
+
+
+ <para>
+ <indexterm><primary>Amanda</primary></indexterm>
+<indexterm><primary>native dump</primary></indexterm>
+<indexterm><primary>GNU tar</primary></indexterm>
+ Amanda, the Advanced Maryland Automatic Network Disk Archiver, is a backup system that
+ allows the administrator of a LAN to set up a single master backup server to back up
+ multiple hosts to a single large capacity tape drive. Amanda uses native dump and/or
+ GNU tar facilities and can back up a large number of workstations running multiple
+ versions of UNIX. Recent versions can also use Samba to back up Microsoft Windows hosts.
+ </para>
+
+ <para>
+ For more information regarding Amanda, please check the <ulink url="http://www.amanda.org/">
+ www.amanda.org/ site</ulink>.
+ </para>
+
+ </sect2>
+
+ <sect2>
+ <title>BOBS: Browseable Online Backup System</title>
+
+
+ <para>
+ <indexterm><primary>BOBS</primary></indexterm>
+ Browseable Online Backup System (BOBS) is a complete online backup system. Uses large
+ disks for storing backups and lets users browse the files using a Web browser. Handles
+ some special files like AppleDouble and icon files.
+ </para>
+
+ <para>
+ The home page for BOBS is located at <ulink url="http://bobs.sourceforge.net/">
+ bobs.sourceforge.net</ulink>.
+ </para>
+
+ </sect2>
+
+</sect1>
+
+</chapter>