60 lines
4.2 KiB
HTML
60 lines
4.2 KiB
HTML
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<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml" 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="dc.language" scheme="rfc1766" 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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<meta name="dc.date" scheme="iso8601" content="2005-09-13" />
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<meta name="copyright" content="(C) Copyright IBM Corporation 1998, 2006" />
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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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<title>Performance</title>
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<link rel="stylesheet" type="text/css" href="ibmidwb.css" />
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<link rel="stylesheet" type="text/css" href="ic.css" />
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</head>
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<body>
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<a id="Top_Of_Page" name="Top_Of_Page"></a><!-- Java sync-link -->
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<script language = "Javascript" src = "../rzahg/synch.js" type="text/javascript"></script>
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<img src="delta.gif" alt="Start of change" />
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<a name="rzahqperrf"></a>
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<h2 id="rzahqperrf">Performance</h2>
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<p><img src="delta.gif" alt="Start of change" />The IXS, IXA, and iSCSI attached servers have their own memory
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and one or more processors, but share the iSeries™ hard disk drive storage through virtual
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(simulated) disk drives. The disk drives are allocated to Windows by creating
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a storage space object on the iSeries. The major difference between the integrated
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servers and stand-alone servers is that stand-alone servers tend to use dedicated
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disk drives and the integrated servers use iSeries storage spaces as virtual disks. iSeries integrated servers also include optional features such as Windows drivers
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to share iSeries tape drives, CD and DVD drives, along with high speed virtual
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Ethernet adaptors.<img src="deltaend.gif" alt="End of change" /></p>
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<p><img src="delta.gif" alt="Start of change" />The use of iSeries storage spaces (virtual drives) provides
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performance benefits that are not typically available in stand-alone environments
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without significant storage fabric investment and maintenance costs. However,
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it also imposes some limitations. You should consider these limitations when
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planning and configuring integrated servers. The information below highlights
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some considerations affecting performance.<img src="deltaend.gif" alt="End of change" /></p>
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<p><img src="delta.gif" alt="Start of change" />Use the following links to see more performance-related information:<img src="deltaend.gif" alt="End of change" /></p>
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<ul>
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<li><a href="rzahqperfstgvsded.htm#rzahqperfstgvsded">iSeries storage spaces versus dedicated disks</a></li>
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<li><a href="rzahqperfstoragespacebalancing.htm#rzahqperfstoragespacebalancing">Storage space balancing</a></li>
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<li><a href="rzahqiscsiattachedperf.htm#rzahqiscsiattachedperf">iSCSI attached server performance</a></li>
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<li><a href="rzahqperfve.htm#rzahqperfve">Virtual Ethernet</a></li>
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<li><img src="delta.gif" alt="Start of change" /> <a href="http://www.ibm.com/servers/eserver/iseries/integratedxseries/" target="_blank">IBM® iSeries Integrated xSeries® solutions</a>
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<img src="www.gif" alt="Link outside Information Center." />
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<br />(www.ibm.com/servers/eserver/iseries/integratedxseries)<img src="deltaend.gif" alt="End of change" /></li>
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<li><a href="http://www.ibm.com/eserver/iseries/perfmgmt/" target="_blank">iSeries Performance Management</a>
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<img src="www.gif" alt="Link outside the Information Center." />
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<br />(www.ibm.com/eserver/iseries/perfmgmt)</li>
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<li>Chapter 17 in the <a href="../books/sc410607.pdf" target="_blank">iSeries Performance
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Capabilities Reference</a>
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<img src="wbpdf.gif" alt="Link to PDF" /></li></ul><img src="deltaend.gif" alt="End of change" />
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<a id="Bot_Of_Page" name="Bot_Of_Page"></a>
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</body>
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</html>
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