73 lines
4.8 KiB
HTML
73 lines
4.8 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="concept" />
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<meta name="DC.Title" content="Compressed objects and storage space" />
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<meta name="abstract" content="All of the licensed programs and some objects of the operating system ship in a compressed form. This requires less storage space on your server. The server decompresses objects according to certain criteria, which could affect the performance of the server." />
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<meta name="description" content="All of the licensed programs and some objects of the operating system ship in a compressed form. This requires less storage space on your server. The server decompresses objects according to certain criteria, which could affect the performance of the server." />
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<meta name="DC.Relation" scheme="URI" content="rzahcconsiderswreplace.htm" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 2004, 2006" />
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<meta name="DC.Rights.Owner" content="(C) Copyright IBM Corporation 2004, 2006" />
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<meta name="DC.Format" content="XHTML" />
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<meta name="DC.Identifier" content="rzahcswscompres" />
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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>Compressed objects and storage space</title>
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</head>
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<body id="rzahcswscompres"><a name="rzahcswscompres"><!-- --></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">Compressed objects and storage space</h1>
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<div><p>All of the licensed programs and some objects of the operating
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system ship in a compressed form. This requires less storage space on your
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server. The server decompresses objects according to certain criteria, which
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could affect the performance of the server.</p>
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<p>System jobs (QDCPOBJ<em>x</em>, where <samp class="codeph">x</samp> is a number) automatically
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decompress these objects during the installation process if your system has
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sufficient unused disk storage.
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If enough storage space is not available, the system decompresses the objects
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when you use them, which could affect the performance of the system.</p>
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<p>The server decompresses objects according to the following criteria:</p>
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<ul><li>Greater than 750 MB available storage <p>The system submits jobs to
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decompress all system objects just installed.</p>
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</li>
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<li>250-750 MB available storage <p>The server decompresses only frequently
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used objects automatically. Object-usage information (the number of days an
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object has been used and the last-used date) is used to identify frequently
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used objects. The server decompresses any object that was used at least five
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times when the last use was within the last 14 days. The server leaves the
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remaining low-use objects in compressed form.</p>
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<ul><li>This does not include decompression of objects that are shipped in the
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operating system and in library QSYS. The system resets usage information
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for those objects during the installation process. For all other licensed
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programs, the object usage information is kept during the installation process.</li>
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<li>A call to a system program does not update its usage information; the
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system does not automatically decompress programs in constrained storage mode.
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However, high-use programs ship in decompressed form and are not considered
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able to be compressed.</li>
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</ul>
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</li>
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<li>Less than 250 MB available storage <p>The system does not submit the
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decompression jobs and instead decompresses the objects as they are used.</p>
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</li>
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</ul>
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<div class="note"><span class="notetitle">Note:</span> The QDCPOBJ<em>x</em> system jobs might run for some time after
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the installation process completes. </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="rzahcconsiderswreplace.htm" title="Use this information to understand special considerations of the server and its software when you upgrade or replace a release.">Software upgrade or replacement</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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