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<h1 class="topictitle1">Logical partition release support</h1>
<div><p>Systems with logical partitions have the capability to support
more than one version of OS/400<sup>®</sup> or i5/OS™.</p>
<p>The logical partition strategy is to support up to four different releases
on the same system, provided that all releases are supported on the server
model. The releases that you can install on a particular server depend upon
which releases are supported on the server model and upon which release you
choose to install on the primary partition (which will be denoted in this
article as the reference release, or P).</p>
<p>If the primary partition is running Version 4 Release 5 (V4R5) or earlier,
you can install and run the following releases on the secondary partitions,
provided that each release is supported by the server model:</p>
<ul><li>The release before the release on the primary partition (P - 1) </li>
<li>The release on the primary partition (P) </li>
<li>The release after the release on the primary partition (P + 1)</li>
</ul>
<p>The only exception to this rule is when the primary partition of 6xx, 7xx,
or Sx0 servers runs V4R4. In this case, you can install V5R1 on a secondary
partition of those servers.</p>
<p>For example, if V4R5 is running on the primary partition of a server, you
can install V4R4, V4R5, or V5R1 on the secondary partitions, provided that
the server supports those releases.</p>
<p>If the primary partition is running V5R1 or later, you can install and
run the following releases on the secondary partitions, provided that each
release is supported by the server model: </p>
<ul><li>The release before the release on the primary partition (P - 1)</li>
<li>The release on the primary partition (P)</li>
<li>The release after the release on the primary partition (P + 1)</li>
<li>The second release after the release on the primary partition (P + 2)</li>
</ul>
<p>For example, if V5R1 is running on the primary partition of a server, you
can install V4R5, V5R1, V5R2, or V5R3 on the secondary partitions, provided
that the server supports those releases. </p>
<p>The logical partition functionality that will be supported on your server
depends upon the server model and upon the releases of OS/400 and i5/OS that you have installed on the server.
For more information on the logical partition functionality supported on each
server model, see Evaluate the hardware limitations of the iSeries(TM) servers.
For more information on the logical partition functionality supported by each
release, see OS/400 and i5/OS logical
partition function by release.</p>
</div>
<div>
<div class="familylinks">
<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>
</div>
<div class="relconcepts"><strong>Related concepts</strong><br />
<div><a href="rzaitsofthard.htm" title="Learn what release levels are supported and how you can partition your system to support new functions.">Software requirements for logical partitions</a></div>
<div><a href="rzaitmoveresources.htm" title="You can dynamically move processors, memory, and interactive performance.">Perform dynamic movement of resources</a></div>
<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>
</div>
</div><div class="nested1" xml:lang="en-us" id="os400andi5osreleasesupportforthe6xx7xxandsx0models"><a name="os400andi5osreleasesupportforthe6xx7xxandsx0models"><!-- --></a><h2 class="topictitle2">OS/400 and i5/OS release
support for the 6xx, 7xx, and Sx0 models</h2>
<div><p>The 6xx and Sx0 servers support all releases from V4R4 through V5R2. The
7xx servers support all releases from V4R4 through V5R3. These models do not
support the shared processor pool. Because of this, you can partition these
models only if the server has two or more processors.</p>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><thead align="left"><tr><th valign="top" id="d0e120"> Primary </th>
<th valign="top" id="d0e122"> Secondary (P-1) </th>
<th valign="top" id="d0e124"> Secondary (P) </th>
<th valign="top" id="d0e126">Secondary (P+1) </th>
<th valign="top" id="d0e128">Secondary (P+2) </th>
</tr>
</thead>
<tbody><tr><td valign="top" headers="d0e120 ">V4R4</td>
<td valign="top" headers="d0e122 ">not supported</td>
<td valign="top" headers="d0e124 ">V4R4</td>
<td valign="top" headers="d0e126 ">V4R5</td>
<td valign="top" headers="d0e128 ">V5R1</td>
</tr>
<tr><td valign="top" headers="d0e120 ">V4R5</td>
<td valign="top" headers="d0e122 ">V4R4</td>
<td valign="top" headers="d0e124 ">V4R5</td>
<td valign="top" headers="d0e126 ">V5R1</td>
<td valign="top" headers="d0e128 ">not supported</td>
</tr>
<tr><td valign="top" headers="d0e120 ">V5R1</td>
<td valign="top" headers="d0e122 ">V4R5</td>
<td valign="top" headers="d0e124 ">V5R1</td>
<td valign="top" headers="d0e126 ">V5R2</td>
<td valign="top" headers="d0e128 ">not supported</td>
</tr>
<tr><td valign="top" headers="d0e120 ">V5R2</td>
<td valign="top" headers="d0e122 ">V5R1</td>
<td valign="top" headers="d0e124 ">V5R2</td>
<td valign="top" headers="d0e126 ">V5R3 (7xx hardware only)</td>
<td valign="top" headers="d0e128 ">not supported</td>
</tr>
<tr><td valign="top" headers="d0e120 ">V5R3 (7xx hardware only)</td>
<td valign="top" headers="d0e122 ">V5R2</td>
<td valign="top" headers="d0e124 ">V5R3</td>
<td valign="top" headers="d0e126 ">not supported</td>
<td valign="top" headers="d0e128 ">not supported </td>
</tr>
</tbody>
</table>
</div>
</div>
</div>
<div class="nested1" xml:lang="en-us" id="os400andi5osreleasesupportforthe820830840and270models"><a name="os400andi5osreleasesupportforthe820830840and270models"><!-- --></a><h2 class="topictitle2">OS/400 and i5/OS release
support for the 820, 830, 840, and 270 models</h2>
<div><p>The 8xx hardware (excluding the 810, 825, 870, and 890 models) can support
release V4R5 or later in a primary or secondary partition as long as the 8xx
model has more than one processor. The 270 hardware can only support V4R5
in a secondary partition on the 2-way processor configuration. The 270 and
8xx models (excluding the 810, 825, 870, and 890 models) with a single processor
can support V5R1 or later releases in all partitions.</p>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><thead align="left"><tr><th valign="top" id="d0e206"> Primary </th>
<th valign="top" id="d0e208"> Secondary (P-1) </th>
<th valign="top" id="d0e210"> Secondary (P) </th>
<th valign="top" id="d0e212">Secondary (P+1) </th>
<th valign="top" id="d0e214">Secondary (P+2) </th>
</tr>
</thead>
<tbody><tr><td valign="top" headers="d0e206 ">V4R5</td>
<td valign="top" headers="d0e208 ">not supported</td>
<td valign="top" headers="d0e210 ">V4R5</td>
<td valign="top" headers="d0e212 ">V5R1</td>
<td valign="top" headers="d0e214 ">not supported</td>
</tr>
<tr><td valign="top" headers="d0e206 ">V5R1</td>
<td valign="top" headers="d0e208 ">V4R5</td>
<td valign="top" headers="d0e210 ">V5R1</td>
<td valign="top" headers="d0e212 ">V5R2</td>
<td valign="top" headers="d0e214 ">V5R3</td>
</tr>
<tr><td valign="top" headers="d0e206 ">V5R2</td>
<td valign="top" headers="d0e208 ">V5R1</td>
<td valign="top" headers="d0e210 ">V5R2</td>
<td valign="top" headers="d0e212 ">V5R3 </td>
<td valign="top" headers="d0e214 ">V5R4</td>
</tr>
<tr><td valign="top" headers="d0e206 ">V5R3</td>
<td valign="top" headers="d0e208 ">V5R2</td>
<td valign="top" headers="d0e210 ">V5R3</td>
<td valign="top" headers="d0e212 ">V5R4</td>
<td valign="top" headers="d0e214 ">future release supported</td>
</tr>
<tr><td valign="top" headers="d0e206 ">V5R4</td>
<td valign="top" headers="d0e208 ">V5R3</td>
<td valign="top" headers="d0e210 ">V5R4</td>
<td valign="top" headers="d0e212 ">future release supported</td>
<td valign="top" headers="d0e214 ">future release supported</td>
</tr>
</tbody>
</table>
</div>
<div class="attention"><span class="attentiontitle">Attention:</span> Some 820, 830, and 840 models only support V5R1 or
later in the primary partition. Consult your IBM<sup>®</sup> Business Partner, marketing representative,
or service specialist for more details.</div>
</div>
</div>
<div class="nested1" xml:lang="en-us" id="os400andi5osreleasesupportforthe810825870and890models"><a name="os400andi5osreleasesupportforthe810825870and890models"><!-- --></a><h2 class="topictitle2">OS/400 and i5/OS release
support for the 810, 825, 870, and 890 models</h2>
<div><p>The 810, 825, 870, and 890 hardware can support V5R2 and later in all partitions.</p>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><thead align="left"><tr><th valign="top" width="20%" id="d0e297"> Primary </th>
<th valign="top" width="20%" id="d0e299"> Secondary (P-1)</th>
<th valign="top" width="20%" id="d0e301"> Secondary (P)</th>
<th valign="top" width="20%" id="d0e303"> Secondary (P+1)</th>
<th valign="top" width="20%" id="d0e305"> Secondary (P+2)</th>
</tr>
</thead>
<tbody><tr><td valign="top" width="20%" headers="d0e297 ">V5R2</td>
<td valign="top" width="20%" headers="d0e299 ">not supported</td>
<td valign="top" width="20%" headers="d0e301 ">V5R2</td>
<td valign="top" width="20%" headers="d0e303 ">V5R3</td>
<td valign="top" width="20%" headers="d0e305 ">V5R4</td>
</tr>
<tr><td valign="top" width="20%" headers="d0e297 ">V5R3</td>
<td valign="top" width="20%" headers="d0e299 ">V5R2</td>
<td valign="top" width="20%" headers="d0e301 ">V5R3</td>
<td valign="top" width="20%" headers="d0e303 ">V5R4</td>
<td valign="top" width="20%" headers="d0e305 ">future release supported</td>
</tr>
<tr><td valign="top" width="20%" headers="d0e297 ">V5R4</td>
<td valign="top" width="20%" headers="d0e299 ">V5R3</td>
<td valign="top" width="20%" headers="d0e301 ">V5R4</td>
<td valign="top" width="20%" headers="d0e303 ">future release supported</td>
<td valign="top" width="20%" headers="d0e305 ">future release supported</td>
</tr>
</tbody>
</table>
</div>
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