70 lines
4.4 KiB
HTML
70 lines
4.4 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 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="How DB2 Multisystem helps you expand your database system" />
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<meta name="abstract" content="By using distributed relational database files, you can more easily expand the configuration of your iSeries servers." />
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<meta name="description" content="By using distributed relational database files, you can more easily expand the configuration of your iSeries servers." />
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<meta name="DC.subject" content="database system, using, Multisystem, DB2" />
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<meta name="keywords" content="database system, using, Multisystem, DB2" />
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<meta name="DC.Relation" scheme="URI" content="RZAF3C5-gen6.htm" />
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<meta name="DC.Relation" scheme="URI" content="scali.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="expanddb2" />
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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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<!-- 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>How DB2 Multisystem
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helps you expand your database system</title>
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</head>
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<body id="expanddb2"><a name="expanddb2"><!-- --></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">How DB2 Multisystem
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helps you expand your database system</h1>
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<div><p>By using distributed relational database files, you can more easily
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expand the configuration of your <span class="keyword">iSeries™</span> servers.</p>
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<p>Before the DB2<sup>®</sup> Multisystem, if you wanted to go from
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one system to two systems, you had several database problems to solve. If
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you moved one-half of your users to a new system, you might also want to move
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one-half of your data to that new system. This then forces you to rewrite
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all of your database-related applications, because the applications must know
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where the data resides. After rewriting the applications, you must use some
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remote access, such as Distributed Relational
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Database Architecture™ (DRDA<sup>®</sup>) or distributed data management (DDM), to access
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the files across systems. Otherwise, some data replication function would
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be used. If you did do this, then multiple copies of the data would exist,
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more storage would be used, and the systems would also do the work of keeping
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the multiple copies of the files at concurrent levels.</p>
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<p>With DB2 Multisystem, the process of adding new systems to
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your configuration is greatly simplified. The database files are partitioned
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across the systems. Then the applications are moved to the new system. The
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applications are unchanged; you do not need to make any programming changes
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to your applications. Your users can now run on the new system and immediately
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have access to the same data. If more growth is needed later, you can redistribute
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the files across the new node group that includes the additional
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systems.</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="scali.htm">Redistribution issues for adding systems to a network</a></strong><br />
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The redistribution of a file across a node group is a fairly simple process.</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="RZAF3C5-gen6.htm" title="DB2 Multisystem can help you increase your database capacity, realize improvements in query performance, and provide remote database access through an easier method.">Performance and scalability with DB2 Multisystem</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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