116 lines
7.9 KiB
HTML
116 lines
7.9 KiB
HTML
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Partitioned server upgrades" />
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<meta name="abstract" content="Find information unique to upgrading a partitioned server." />
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<title>Partitioned server upgrades</title>
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<body id="rzamdconsiderlpar"><a name="rzamdconsiderlpar"><!-- --></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">Partitioned server upgrades</h1>
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<div><p>Find information unique to upgrading a partitioned server.</p>
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<p>Upgrading a partitioned server is more complex than upgrading a server
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without partitions. When upgrading a partitioned server, be aware of the following.</p>
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<div class="section"><h4 class="sectiontitle">Upgrading multiple partitions takes longer</h4><p>When
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you upgrade a partitioned server, you actually perform one upgrade for each
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partition. This upgrade process includes planning, preparing for, and performing
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the upgrade. Planning is most involved and may require up to six weeks, depending
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on the complexity of your environment. Installing the <span class="keyword">i5/OS™</span> release
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on a server that is not preloaded requires at least one hour. Upgrading from
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one server to another server requires up to three days for each partition.
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In addition, it is recommended that you stabilize the server after upgrading
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each partition, which means your total upgrade may take several weeks to complete.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Upgrading your server may change server resources</h4><p>When
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you convert an expansion unit, two things happen. First, new buses with new
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bus numbers are created. You need to assign the new bus numbers to the correct
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partition before turning on the partition. Second, some new resource names
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are created. You need to reassign or rename the new resource names as appropriate.
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For information about converting from one expansion unit to another in a partitioned
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environment, see the Convert expansion units in a partitioned environment
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topic.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Upgrading your server may require additional resource management</h4><p>If
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the target server has <var class="varname">fewer</var> processors than the source
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server, you must ensure that the target server can satisfy the minimum processor
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values per partition. You can redefine the partitions either before or after
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performing the upgrade. Either adjust the configuration on the source server
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to reflect the target server's processing resources or correct the configuration
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on the target server before starting the secondary partitions.</p>
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<p>For example,
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if you are upgrading from a 4-way server to a 2-way server, you must define
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your partitions so they will work on the new 2-way server. You can do this
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before the upgrade, by defining the partitions so that only 2 of the 4 processors
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are used, or after the upgrade by defining the partitions to use only 2 instead
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of 4 processors.</p>
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<p>If the target server has <var class="varname">more</var> processors
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than the current server, the configuration on the target server will indicate
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additional resources that must then be manually assigned to the appropriate
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partitions.</p>
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<p>Similarly, you must ensure that target server can satisfy
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the minimum memory values per partition. The current memory values can be
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adjusted on the target server.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Running Linux<sup>®</sup> in a guest partition has unique requirements</h4><p>If
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your solution includes Linux, be sure to use the Linux topic to help you identify the requirements
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for configuring Linux in an iSeries™ logical partition. If you are
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upgrading to a system with a POWER4™ processor and are running Linux in an iSeries logical
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partition, you must ensure that the version of Linux you are running supports the new
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hardware. See the Linux for IBM<sup>®</sup> Web site for a list of Linux distributions
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that support the new hardware. If your current Linux distribution does not support the
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new hardware, you must upgrade your Linux distribution before upgrading to
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the new hardware.</p>
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</div>
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<div class="section"><h4 class="sectiontitle">Service representative responsibilities</h4><p>In a server
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upgrade, the service representative upgrades all of the hardware on the partitioned
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server. However, the service representative does not reassign resources or
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upgrade software on individual partitions. IBM offers these and other services for
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a fee. For more information about these services, select <span class="uicontrol">Migration</span> on
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the Integrated Applications Services Web site.</p>
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<p>For additional information
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about logical partitions, see the Logical partitions topic.</p>
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</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="rzamdupgradeconcepts.htm" title="Review both the process for upgrading your server and some considerations for upgrading a partitioned server. Find information about which servers you can upgrade to the new iSeries servers. Learn the terminology that is used in this topic.">Upgrade concepts</a></div>
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</div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
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<div><a href="../rzalm/rzalmlinuxkickoff.htm">Linux</a></div>
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<div><a href="http://www-1.ibm.com/servers/eserver/iseries/linux/" target="_blank">Linux for IBM</a></div>
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<div><a href="http://www-1.ibm.com/services/its/us/inteapps.htm">Integrated Applications Services</a></div>
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<div><a href="../rzait/rzaiticlpar.htm">Logical partitions</a></div>
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<div><a href="rzamdplanupgrade.htm" title="Find out how planning can help you minimize your downtime and make your upgrade as easy as possible.">Plan the upgrade</a></div>
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</div>
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<div class="reltasks"><strong>Related tasks</strong><br />
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<div><a href="rzamdexpanupgradelpar.htm" title="When performing any of the following expansion unit conversions in a partitioned environment, it is essential that detailed planning is performed before starting the expansion unit conversion.">Convert expansion units for a partitioned server</a></div>
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</div>
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</div>
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</body>
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