59 lines
4.6 KiB
HTML
59 lines
4.6 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="concept" />
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<meta name="DC.Title" content="Shorten unplanned outages" />
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<meta name="abstract" content="Unplanned outages do occur, and a key to availability is to ensure that when they do occur you can recover from them as quickly as possible." />
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<meta name="description" content="Unplanned outages do occur, and a key to availability is to ensure that when they do occur you can recover from them as quickly as possible." />
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<meta name="DC.Relation" scheme="URI" content="rzalwoverview.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzalwrestart.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzalwrecent_changes.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzalwlost_data.htm" />
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<meta name="DC.Relation" scheme="URI" content="rzalwvaryiasp.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 1998, 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="rzalwshorten_unplanned" />
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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>Shorten unplanned outages</title>
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</head>
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<body id="rzalwshorten_unplanned"><a name="rzalwshorten_unplanned"><!-- --></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">Shorten unplanned outages</h1>
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<div><p>Unplanned outages do occur, and a key to availability is to ensure
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that when they do occur you can recover from them as quickly as possible. </p>
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<p>The purpose of all recovery strategies is to get back to where you were
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before the outage occurred.</p>
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<p>If you have a single system and you cannot achieve the level of availability
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you need using these strategies, you may want to consider clusters. </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="rzalwrestart.htm">Reduce the time to restart your system</a></strong><br />
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Unfortunately, systems periodically experience an unplanned outage. Use the availability tools described here to restart your system as quickly as possible after an unplanned outage.</li>
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<li class="ulchildlink"><strong><a href="rzalwrecent_changes.htm">Recover recent changes after an unplanned outage</a></strong><br />
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After an unplanned outage, your goal is to get your system up and running again as quickly as possible. You want to get back to where you were before the outage occurred without having to manually re-enter transactions.</li>
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<li class="ulchildlink"><strong><a href="rzalwlost_data.htm">Recover lost data after an unplanned outage</a></strong><br />
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You may lose data as a result of an unplanned outage, such as a disk failure. The most extreme example of data loss is losing your entire site, such as what might happen as a result of a natural disaster.</li>
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<li class="ulchildlink"><img src="./delta.gif" alt="Start of change" /><strong><a href="rzalwvaryiasp.htm">Reduce the time to vary on independent disk pool</a></strong><img src="./deltaend.gif" alt="End of change" /><br />
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When unplanned outages occur, data stored within independent disk pools is unavailable until they can be restarted. To ensure that the restart occurs quickly and efficiently, you should use recommended strategies for varying on your independent disk pools.</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="rzalwoverview.htm" title="In today's fast-paced Internet environment, it is crucial that your data and applications be available to you when you need them. If your customers cannot access your Web site because your system is down, they may go to your competitors instead.">Availability roadmap</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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