67 lines
3.8 KiB
HTML
67 lines
3.8 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="security" content="public" />
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<meta name="Robots" content="index,follow" />
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<meta http-equiv="PICS-Label" content='(PICS-1.1 "http://www.icra.org/ratingsv02.html" l gen true r (cz 1 lz 1 nz 1 oz 1 vz 1) "http://www.rsac.org/ratingsv01.html" l gen true r (n 0 s 0 v 0 l 0) "http://www.classify.org/safesurf/" l gen true r (SS~~000 1))' />
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<meta name="DC.Type" content="topic" />
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<meta name="DC.Title" content="Geographic mirroring" />
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<meta name="DC.Relation" scheme="URI" content="rzalyconcepts.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzalygeobenefits.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzalygeocosts.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzalygeoworks.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzalyrequirementsforgeographicmirroring.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzalyfailoverandswitchoveriasp.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzalyrollingupgrades.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2002, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2002, 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="rzalygeographicmirror" />
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<meta name="DC.Language" content="en-us" />
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<!-- All rights reserved. Licensed Materials Property of IBM -->
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<!-- US Government Users Restricted Rights -->
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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>Geographic mirroring</title>
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</head>
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<body id="rzalygeographicmirror"><a name="rzalygeographicmirror"><!-- --></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">Geographic mirroring</h1>
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<div><p id="rzalygeographicmirror__geomirrorp1"><a name="rzalygeographicmirror__geomirrorp1"><!-- --></a>Geographic mirroring is
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a function that keeps two identical copies of an independent disk pool at
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two sites to provide high availability and disaster recovery. The copy owned
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by the primary node is the production copy and the copy owned by a backup
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node at the other site is the mirror copy. User operations and applications
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access the independent disk pool on the primary node, the node that owns the
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production copy. </p>
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<p id="rzalygeographicmirror__geomirrorp2"><a name="rzalygeographicmirror__geomirrorp2"><!-- --></a>Geographic mirroring is
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a subfunction of cross-site mirroring (XSM), which is part of i5/OS™ Option
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41, High Available Switchable Resources. </p>
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</div>
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<div>
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<ul class="ullinks">
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<li class="ulchildlink"><strong><a href="rzalygeobenefits.htm">Benefits of geographic mirroring</a></strong><br />
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</li>
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<li class="ulchildlink"><strong><a href="rzalygeocosts.htm">Costs and limitations of geographic mirroring</a></strong><br />
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</li>
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<li class="ulchildlink"><strong><a href="rzalygeoworks.htm">How geographic mirroring works</a></strong><br />
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</li>
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<li class="ulchildlink"><strong><a href="rzalyrequirementsforgeographicmirroring.htm">Requirements for geographic mirroring</a></strong><br />
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</li>
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<li class="ulchildlink"><strong><a href="rzalyfailoverandswitchoveriasp.htm">Failover and switchover</a></strong><br />
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</li>
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<li class="ulchildlink"><strong><a href="rzalyrollingupgrades.htm">Rolling upgrades</a></strong><br />
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</li>
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</ul>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzalyconcepts.htm">Independent disk pools</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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