59 lines
3.3 KiB
HTML
59 lines
3.3 KiB
HTML
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<?xml version="1.0" encoding="UTF-8"?>
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<!DOCTYPE html
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PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html lang="en-us" xml:lang="en-us">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<meta name="DC.Type" content="topic" />
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<meta name="DC.Title" content="Comparison of standard mirroring and remote mirroring" />
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<meta name="DC.Relation" scheme="URI" content="rzalyremote.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2002, 2006" />
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<meta name="DC.Format" content="XHTML" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- Use, duplication or disclosure restricted by -->
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<!-- GSA ADP Schedule Contract with IBM Corp. -->
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<link rel="stylesheet" type="text/css" href="./ibmdita.css" />
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<link rel="stylesheet" type="text/css" href="./ic.css" />
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<title>Comparison of standard mirroring and remote mirroring</title>
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</head>
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<body id="hdrcompmir"><a name="hdrcompmir"><!-- --></a>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Comparison of standard mirroring and remote mirroring</h1>
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<div><p>For the most part, the way you manage disk units with remote mirroring
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is the same as how you manage disk units with standard mirroring. When you
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add disk units, unprotected disk units must be added in pairs, as with general
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mirroring. To achieve remote protection of all added units, half of the new
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units of each capacity of disk unit should be in the remote group and half
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in the local group. Single device-parity protected units may be added to disk
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pools using remote mirroring. However, the disk pool is not protected against
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a site disaster.</p>
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<p>You will also see some differences when you Restore remote mirrored protection
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after a recovery.</p>
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<div class="section"><h4 class="sectiontitle">Restore remote mirrored protection after a recovery</h4><p>To
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restore mirrored protection following the recovery procedures, you need to
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perform the following steps: </p>
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<ul><li>Obtain and physically attach all required disk units.</li>
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<li>Stop or suspend mirrored protection if it is currently configured on the
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system.</li>
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<li>Add the new disk units to the correct disk pools.</li>
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<li>Resume mirrored protection</li>
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</ul>
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<p>For detailed information about how to recover systems with mirrored
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protection, see <a href="../books/sc415304.pdf" target="_blank">Backup
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and Recovery </a> <img src="wbpdf.gif" alt="Link to PDF" />.</p>
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</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzalyremote.htm">Remote disk unit mirroring support</a></div>
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</div>
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</div>
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</body>
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</html>
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