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215 lines
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<meta name="DC.Title" content="i5/OS logical partition function by release" />
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<meta name="abstract" content="The capabilities available in i5/OS logical partitions vary with each operating system release." />
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<title>i5/OS logical partition
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function by release</title>
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<body id="rzaitsoftwarefunction"><a name="rzaitsoftwarefunction"><!-- --></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"><span class="keyword">i5/OS</span> logical partition
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function by release</h1>
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<div><p>The capabilities available in <span class="keyword">i5/OS™</span> logical
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partitions vary with each operating system release.</p>
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<p>When you install multiple releases on a single server, the release on the
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primary partition determines the base logical partitioning functionality available
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on that server. For example, if you install V4R5 on the primary partition
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of a server, you are not able to use shared processors on that server, because
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V4R5 does not support shared processors. This is the case even if shared processors
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are supported on that server model and you install V5R1 (which supports shared
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processors) on multiple secondary partitions. </p>
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<p>Also, installing an earlier release on a secondary partition limits the
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logical partitioning functionality available to that secondary partition.
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For example, if you install V4R5 on a secondary partition, the secondary partition
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is not able to use shared processors. This is the case even if you have installed
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V5R1 on the primary partition and on other secondary partitions. (The primary
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partition and the secondary partitions on which you have installed V5R1 can
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still use shared processors, even if you have installed V4R5 on another secondary
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partition.)</p>
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<p>Use the following table to determine the logical partition function by
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release.</p>
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<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><thead align="left"><tr><th valign="top" id="d0e37"> Software Function</th>
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<th valign="top" id="d0e39">V4R4 </th>
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<th valign="top" id="d0e41">V4R5 </th>
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<th valign="top" id="d0e43">V5R1 and V5R2 </th>
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<th valign="top" id="d0e45">V5R3 and later</th>
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</tr>
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</thead>
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<tbody><tr><td valign="top" headers="d0e37 ">Maximum Partitions</td>
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<td valign="top" headers="d0e39 ">12 or the number of processors on the system, whichever is less.</td>
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<td valign="top" headers="d0e41 ">12 for 6xx, 7xx, Sx0 models; 24 for 820, 830, and 840 models; or the
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number of processors on the system, whichever is less.</td>
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<td valign="top" headers="d0e43 "><p>12 for 6xx, 7xx, <br />
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Sx0 models; 32 <br />
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for 270, 810, 820, <br />
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825, 830, 840, 870, <br />
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and 890 models.<br />
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<br />
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(The maximum <br />
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number of <br />
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partitions supported <br />
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depends on the <br />
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number of <br />
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processors in the <br />
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server model. 810, <br />
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825, 870, and 890 <br />
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models only support <br />
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V5R2 or later.)</p>
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</td>
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<td valign="top" headers="d0e45 "><p>12 for 7xx models. <br />
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32 for 810, 820, <br />
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825, 830, 840, 870, <br />
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and 890 models.<br />
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<br />
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(The maximum <br />
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number of partitions <br />
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supported depends <br />
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on the number of <br />
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processors in the <br />
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server model.)</p>
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</td>
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</tr>
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<tr><td valign="top" headers="d0e37 ">Processors</td>
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<td valign="top" headers="d0e39 "><ul><li>Static: requires a restart of the partition to change.</li>
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<li>Dedicated to a partition.</li>
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</ul>
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</td>
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<td valign="top" headers="d0e41 "><ul><li>Static: requires a restart of the partition to change.</li>
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<li>Dedicated to a partition.</li>
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</ul>
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</td>
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<td valign="top" headers="d0e43 "><ul><li>Dynamic: can be changed with a restart of the partition.</li>
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<li>Can be shared among multiple partitions.</li>
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</ul>
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</td>
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<td valign="top" headers="d0e45 "><ul><li>Dynamic: can be changed with a restart of the partition.</li>
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<li>Can be shared among multiple partitions.</li>
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</ul>
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</td>
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</tr>
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<tr><td valign="top" headers="d0e37 ">Memory</td>
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<td valign="top" headers="d0e39 ">Static: requires a restart of the partition to change.</td>
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<td valign="top" headers="d0e41 ">Static: requires a restart of the partition to change.</td>
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<td valign="top" headers="d0e43 ">Dynamic: can be changed without a restart of the partition.</td>
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<td valign="top" headers="d0e45 ">Dynamic: can be changed without a restart of the partition.</td>
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</tr>
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<tr><td valign="top" headers="d0e37 ">Interactive</td>
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<td valign="top" headers="d0e39 ">Static: requires a restart of the partition to change.</td>
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<td valign="top" headers="d0e41 ">Static: requires a restart of the partition to change.</td>
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<td valign="top" headers="d0e43 ">Dynamic: can be changed without a restart of the partition.</td>
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<td valign="top" headers="d0e45 ">Dynamic: can be changed without a restart of the partition.</td>
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</tr>
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<tr><td valign="top" headers="d0e37 ">Virtual OptiConnect</td>
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<td valign="top" headers="d0e39 "><ul><li>Static: requires a restart of the entire system to change.</li>
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<li>Single network.</li>
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</ul>
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</td>
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<td valign="top" headers="d0e41 "><ul><li>Static: requires a restart of the entire system to change.</li>
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<li>Single network.</li>
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</ul>
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</td>
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<td valign="top" headers="d0e43 "><ul><li>Dynamic: can be changed without a restart of the partition.</li>
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<li>Single network.</li>
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</ul>
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</td>
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<td valign="top" headers="d0e45 "><ul><li>Dynamic: can be changed without a restart of the partition.</li>
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<li>Single network.</li>
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</ul>
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</td>
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</tr>
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<tr><td valign="top" headers="d0e37 ">Virtual Ethernet</td>
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<td valign="top" headers="d0e39 ">Not supported.</td>
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<td valign="top" headers="d0e41 ">Not supported.</td>
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<td valign="top" headers="d0e43 "><ul><li>Dynamic: can be changed without a restart of the partition.</li>
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<li>Up to 16 networks.</li>
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</ul>
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</td>
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<td valign="top" headers="d0e45 "><ul><li>Dynamic: can be changed without a restart of the partition.</li>
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<li>Up to 16 networks.</li>
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</ul>
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</td>
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</tr>
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<tr><td valign="top" headers="d0e37 ">HSL OptiConnect</td>
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<td valign="top" headers="d0e39 ">Not supported.</td>
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<td valign="top" headers="d0e41 ">Not supported.</td>
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<td valign="top" headers="d0e43 "><ul><li>Dynamic: can be changed without a restart of the partition.</li>
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<li>Can be shared among multiple partitions.</li>
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<li>Single network.</li>
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</ul>
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</td>
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<td valign="top" headers="d0e45 "><ul><li>Dynamic: can be changed without a restart of the partition.</li>
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<li>Can be shared among multiple partitions.</li>
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<li>Single network.</li>
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</ul>
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</td>
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</tr>
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<tr><td valign="top" headers="d0e37 ">I/O</td>
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<td valign="top" headers="d0e39 "><ul><li>Allocated at bus-level or IOP-level.</li>
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<li>IOP can be switched among partitions dynamically.</li>
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<li>Bus ownership or bus usage (shared or dedicated) changes require a restart
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of the whole system.</li>
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</ul>
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</td>
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<td valign="top" headers="d0e41 "><ul><li>Allocated at bus-level or IOP-level.</li>
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<li>IOP can be switched among partitions dynamically.</li>
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<li>Bus ownership or bus usage (shared or dedicated) changes require a restart
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of the whole system.</li>
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</ul>
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</td>
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<td valign="top" headers="d0e43 "><ul><li>Allocated at bus-level or IOP-level.</li>
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<li>IOP can be switched among partitions dynamically.</li>
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<li>Bus ownership or bus usage (shared or dedicated) changes occur dynamically.</li>
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</ul>
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</td>
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<td valign="top" headers="d0e45 "><ul><li>Allocated at bus-level or IOP-level.</li>
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<li>IOP can be switched among partitions dynamically.</li>
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<li>Bus ownership or bus usage (shared or dedicated) changes occur dynamically.</li>
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</ul>
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</td>
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</tr>
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<tr><td valign="top" headers="d0e37 ">Guest Partition</td>
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<td valign="top" headers="d0e39 ">Not supported.</td>
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<td valign="top" headers="d0e41 ">Not supported.</td>
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<td valign="top" headers="d0e43 ">Linux<sup>®</sup>.</td>
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<td valign="top" headers="d0e45 ">Linux.</td>
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</tr>
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</tbody>
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</table>
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</div>
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<p>When you have determined the software capabilities, ensure that the particular
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hardware model supports all of the required logical partition capabilities.
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Additional details are located in Evaluate the hardware limitation of the iSeries™.</p>
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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="rzaitlicense.htm" title="Learn about the software licensing and pricing strategy for IBM products on an iSeries server with logical partitions.">Software licensing and licensed programs for logical partitions</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="rzaitevalhardware.htm" title="The 6xx, 7xx, Sxx, 8xx, and 890 n-way base servers support logical partitions (LPAR).">Evaluate the hardware limitations of the iSeries servers</a></div>
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</div>
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</div>
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