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documentation/en/index20.php

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+<?php
+# dvdisaster: English homepage translation
+# Copyright (C) 2004-2009 Carsten Gnörlich
+#
+# UTF-8 trigger: äöüß 
+#
+# Include our PHP sub routines, then call begin_page()
+# to start the HTML page, insert the header, 
+# navigation and news if appropriate.
+
+require("../include/dvdisaster.php");
+begin_page();
+?>
+
+<!--- Insert actual page content below --->
+
+<h3>dvdisaster as a complement to quality scans</h3>
+
+<a href="qa.php#pipo">Quality scans</a>, e.g. C2 error or PI/PO scans are a valuable 
+tool for testing the results of the media writing process.<p>
+
+But quality scans are <b>not</b> a reliable means of <b>predicting 
+the lifetime</b> of optical media. <br>
+Consider we are looking for the right time
+to copy a worn-out medium onto a new one:
+
+<ul>
+<li>Too early: Copying media because of a bad quality scan is cost-ineffective.
+Sometimes such media remain readable much longer than expected.<p></li>
+<li>Too late: When the quality scan reveals unreadable sectors some
+data has already been lost.<p></li>
+<li>Right before the medium fails: The ideal case, but how to tell?
+</ul>
+
+However, we could do it the dvdisaster way:
+
+<ul>
+<li><a href="howtos20.php">Create error correction data</a> for the medium.<p></li>
+<li><a href="howtos10.php">Scan the medium</a> regularly. Use it until the first read errors occur.<p></li>
+<li><a href="howtos40.php">Recover</a> the read errors <a href="howtos40.php">using the error correction data</a>.
+Write the recovered image to a new medium.</li>
+</ul>
+
+<p>
+<a href="index30.php">Pro and con of dvdisaster at a glance...</a>
+
+
+<!--- do not change below --->
+
+<?php
+# end_page() adds the footer line and closes the HTML properly.
+
+end_page();
+?>