1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Chapter�31.�Backup Techniques</title><link rel="stylesheet" href="../samba.css" type="text/css"><meta name="generator" content="DocBook XSL Stylesheets V1.74.0"><link rel="home" href="index.html" title="The Official Samba 3.5.x HOWTO and Reference Guide"><link rel="up" href="optional.html" title="Part�III.�Advanced Configuration"><link rel="prev" href="unicode.html" title="Chapter�30.�Unicode/Charsets"><link rel="next" href="SambaHA.html" title="Chapter�32.�High Availability"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter�31.�Backup Techniques</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="unicode.html">Prev</a>�</td><th width="60%" align="center">Part�III.�Advanced Configuration</th><td width="20%" align="right">�<a accesskey="n" href="SambaHA.html">Next</a></td></tr></table><hr></div><div class="chapter" lang="en"><div class="titlepage"><div><div><h2 class="title"><a name="Backup"></a>Chapter�31.�Backup Techniques</h2></div><div><div class="author"><h3 class="author"><span class="firstname">John</span> <span class="othername">H.</span> <span class="orgname">Samba Team</span> <span class="surname">Terpstra</span></h3><div class="affiliation"><span class="orgname">Samba Team<br></span><div class="address"><p><code class="email"><<a class="email" href="mailto:jht@samba.org">jht@samba.org</a>></code></p></div></div></div></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="sect1"><a href="Backup.html#id2671241">Features and Benefits</a></span></dt><dt><span class="sect1"><a href="Backup.html#id2671286">Discussion of Backup Solutions</a></span></dt><dd><dl><dt><span class="sect2"><a href="Backup.html#id2671383">BackupPC</a></span></dt><dt><span class="sect2"><a href="Backup.html#id2671554">Rsync</a></span></dt><dt><span class="sect2"><a href="Backup.html#id2671724">Amanda</a></span></dt><dt><span class="sect2"><a href="Backup.html#id2671772">BOBS: Browseable Online Backup System</a></span></dt></dl></dd></dl></div><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2671241"></a>Features and Benefits</h2></div></div></div><p> 2<a class="indexterm" name="id2671249"></a> 3<a class="indexterm" name="id2671256"></a> 4<a class="indexterm" name="id2671263"></a> 5<a class="indexterm" name="id2671270"></a> 6The Samba project is over 10 years old. During the early history 7of Samba, UNIX administrators were its key implementors. UNIX administrators 8use UNIX system tools to backup UNIX system files. Over the past 94 years, an increasing number of Microsoft network administrators have 10taken an interest in Samba. This is reflected in the questions about backup 11in general on the Samba mailing lists. 12</p></div><div class="sect1" lang="en"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a name="id2671286"></a>Discussion of Backup Solutions</h2></div></div></div><p> 13<a class="indexterm" name="id2671294"></a> 14<a class="indexterm" name="id2671301"></a> 15During discussions at a Microsoft Windows training course, one of 16the pro-UNIX delegates stunned the class when he pointed out that Windows 17NT4 is limiting compared with UNIX. He likened UNIX to a Meccano set 18that has an unlimited number of tools that are simple, efficient, 19and, in combination, capable of achieving any desired outcome. 20</p><p> 21<a class="indexterm" name="id2671316"></a> 22<a class="indexterm" name="id2671324"></a> 23One of the Windows networking advocates retorted that if she wanted a 24Meccano set, she would buy one. She made it clear that a complex single 25tool that does more than is needed but does it with a clear purpose and 26intent is preferred by some like her. 27</p><p> 28<a class="indexterm" name="id2671338"></a> 29<a class="indexterm" name="id2671345"></a> 30<a class="indexterm" name="id2671352"></a> 31Please note that all information here is provided as is and without recommendation 32of fitness or suitability. The network administrator is strongly encouraged to 33perform due diligence research before implementing any backup solution, whether free 34software or commercial. 35</p><p> 36A useful Web site I recently stumbled across that you might like to refer to 37is located at <a class="ulink" href="http://www.allmerchants.com/Software/Backup_Software/" target="_top"> 38www.allmerchants.com</a>. 39</p><p> 40The following three free software projects might also merit consideration. 41</p><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2671383"></a>BackupPC</h3></div></div></div><p> 42 <a class="indexterm" name="id2671391"></a> 43<a class="indexterm" name="id2671398"></a> 44<a class="indexterm" name="id2671404"></a> 45 BackupPC version 2.0.0 has been released on <a class="ulink" href="http://backuppc.sourceforge.net" target="_top">SourceForge</a>. 46 New features include support for <code class="literal">rsync/rsyncd</code> and internationalization of the CGI interface 47 (including English, French, Spanish, and German). 48 </p><p> 49<a class="indexterm" name="id2671429"></a> 50<a class="indexterm" name="id2671436"></a> 51<a class="indexterm" name="id2671443"></a> 52<a class="indexterm" name="id2671449"></a> 53<a class="indexterm" name="id2671456"></a> 54<a class="indexterm" name="id2671462"></a> 55<a class="indexterm" name="id2671469"></a> 56<a class="indexterm" name="id2671476"></a> 57 BackupPC is a high-performance Perl-based package for backing up Linux, 58 UNIX, and Windows PCs and laptops to a server's disk. BackupPC is highly 59 configurable and easy to install and maintain. SMB (via smbclient), 60 <code class="literal">tar</code> over <code class="literal">rsh/ssh</code>, or <code class="literal">rsync/rsyncd</code> 61 are used to extract client data. 62 </p><p> 63<a class="indexterm" name="id2671508"></a> 64<a class="indexterm" name="id2671514"></a> 65<a class="indexterm" name="id2671521"></a> 66 Given the ever-decreasing cost of disks and RAID systems, it is now 67 practical and cost effective to backup a large number of machines onto 68 a server's local disk or network storage. This is what BackupPC does. 69 </p><p> 70 Key features are pooling of identical files (big savings in server disk 71 space), compression, and a comprehensive CGI interface that allows users 72 to browse backups and restore files. 73 </p><p> 74<a class="indexterm" name="id2671542"></a> 75 BackupPC is free software distributed under a GNU GPL license. 76 BackupPC runs on Linux/UNIX/freenix servers and has been tested 77 on Linux, UNIX, Windows 9x/Me, Windows 98, Windows 200x, Windows XP, and Mac OSX clients. 78 </p></div><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2671554"></a>Rsync</h3></div></div></div><p> 79<a class="indexterm" name="id2671562"></a> 80<a class="indexterm" name="id2671569"></a> 81<a class="indexterm" name="id2671575"></a> 82<a class="indexterm" name="id2671582"></a> 83<a class="indexterm" name="id2671589"></a> 84<a class="indexterm" name="id2671596"></a> 85 <code class="literal">rsync</code> is a flexible program for efficiently copying files or 86 directory trees.</p><p><code class="literal">rsync</code> has many options to select which files will be copied 87 and how they are to be transferred. It may be used as an 88 alternative to <code class="literal">ftp, http, scp</code>, or <code class="literal">rcp</code>.</p><p> 89<a class="indexterm" name="id2671635"></a> 90<a class="indexterm" name="id2671642"></a> 91<a class="indexterm" name="id2671649"></a> 92 The rsync remote-update protocol allows rsync to transfer just 93 the differences between two sets of files across the network link, 94 using an efficient checksum-search algorithm described in the 95 technical report that accompanies the rsync package.</p><p>Some of the additional features of rsync are:</p><div class="itemizedlist"><ul type="disc"><li><p> 96 Support for copying links, devices, owners, groups, and permissions. 97 </p></li><li><p> 98 Exclude and exclude-from options are similar to GNU tar. 99 </p></li><li><p> 100 A CVS exclude mode for ignoring the same files that CVS would ignore. 101 </p></li><li><p> 102 Can use any transparent remote shell, including rsh or ssh. 103 </p></li><li><p> 104 Does not require root privileges. 105 </p></li><li><p> 106 Pipelining of file transfers to minimize latency costs. 107 </p></li><li><p> 108 Support for anonymous or authenticated rsync servers (ideal for 109 mirroring). 110 </p></li></ul></div></div><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2671724"></a>Amanda</h3></div></div></div><p> 111 <a class="indexterm" name="id2671732"></a> 112<a class="indexterm" name="id2671738"></a> 113<a class="indexterm" name="id2671745"></a> 114 Amanda, the Advanced Maryland Automatic Network Disk Archiver, is a backup system that 115 allows the administrator of a LAN to set up a single master backup server to back up 116 multiple hosts to a single large capacity tape drive. Amanda uses native dump and/or 117 GNU tar facilities and can back up a large number of workstations running multiple 118 versions of UNIX. Recent versions can also use Samba to back up Microsoft Windows hosts. 119 </p><p> 120 For more information regarding Amanda, please check the <a class="ulink" href="http://www.amanda.org/" target="_top"> 121 www.amanda.org/ site</a>. 122 </p></div><div class="sect2" lang="en"><div class="titlepage"><div><div><h3 class="title"><a name="id2671772"></a>BOBS: Browseable Online Backup System</h3></div></div></div><p> 123 <a class="indexterm" name="id2671781"></a> 124 Browseable Online Backup System (BOBS) is a complete online backup system. Uses large 125 disks for storing backups and lets users browse the files using a Web browser. Handles 126 some special files like AppleDouble and icon files. 127 </p><p> 128 The home page for BOBS is located at <a class="ulink" href="http://bobs.sourceforge.net/" target="_top"> 129 bobs.sourceforge.net</a>. 130 </p></div></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="unicode.html">Prev</a>�</td><td width="20%" align="center"><a accesskey="u" href="optional.html">Up</a></td><td width="40%" align="right">�<a accesskey="n" href="SambaHA.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter�30.�Unicode/Charsets�</td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top">�Chapter�32.�High Availability</td></tr></table></div></body></html> 131