70 lines
3.9 KiB
HTML
70 lines
3.9 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="Disk protection" />
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<meta name="DC.Relation" scheme="URI" content="rzalydmconcepts.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzalydpp.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzalymirrorconcept.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzalymirrorben.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzalymirrorcost.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzalymirrorperf.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzalymirrorwork.htm" />
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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.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="rzalydpconcepts" />
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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>Disk protection</title>
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</head>
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<body id="rzalydpconcepts"><a name="rzalydpconcepts"><!-- --></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">Disk protection</h1>
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<div><p>It is important to protect all the disk units on your system with either
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device parity protection or mirrored protection. This prevents the loss of
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information when a disk failure occurs. In many cases, you can keep your system
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running while a disk unit is being repaired or replaced. Your system can continue
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to run in the following scenarios:</p>
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<div class="p"><ul><li>If a disk failure occurs in a disk pool that has mirrored protection. </li>
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<li>If one disk unit in a device parity set fails with <a href="rzalydpp.htm">RAID 5</a>.</li>
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<li>If two disk units in a device parity set fail with <a href="rzalydpp.htm">RAID 6</a>.</li>
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</ul>
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</div>
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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="rzalydpp.htm">Device parity protection</a></strong><br />
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</li>
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<li class="ulchildlink"><strong><a href="rzalymirrorconcept.htm">Mirrored protection</a></strong><br />
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</li>
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<li class="ulchildlink"><strong><a href="rzalymirrorben.htm">Mirrored protection benefits</a></strong><br />
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</li>
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<li class="ulchildlink"><strong><a href="rzalymirrorcost.htm">Mirrored protection costs and limitations</a></strong><br />
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</li>
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<li class="ulchildlink"><strong><a href="rzalymirrorperf.htm">Mirrored protection and performance</a></strong><br />
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</li>
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<li class="ulchildlink"><strong><a href="rzalymirrorwork.htm">How mirrored protection works</a></strong><br />
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</li>
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<li class="ulchildlink"><strong><a href="rzalyremote.htm">Remote disk unit mirroring support</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="rzalydmconcepts.htm" title="Learn about how disk storage works, how you can leverage disk pools in your environment. Protect your data with device parity protection and mirrored protection.">Disk management concepts</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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