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<h1 class="topictitle1">Shared processor pool considerations for <span class="keyword">i5/OS</span> license
agreements</h1>
<div><p>Unique software resources exist and operate on hardware that is
assigned to each partition.</p>
<p>These software resources include separate copies of Licensed Internal Code, <span class="keyword">i5/OS™</span>, and other licensed program
products. Additionally, language feature codes, security, user data, most
system values, and software release and fixes (or program temporary fixes,
PTFs) remain unique for each logical partition.</p>
<p>If you use the shared processing pool, you should be aware of the maximum
number of virtual processors you allocate to each partition on your server.
Depending on your logical partition configuration, you might need to purchase
more <span class="keyword">i5/OS</span> licenses to
ensure compliance with your <span class="keyword">i5/OS</span> license
agreement. IBM<sup>®</sup> rounds
up to the nearest whole number in calculating the number of software licenses
you need to purchase. However, IBM never charges you for more software
licenses than the number of physical processors that exist on your server.</p>
<p>For example, Company Y has purchased 2 <span class="keyword">i5/OS</span> licenses.
Company Y has a server with 3 processors and 4 logical partitions. All 4 partitions
use the shared processing pool. The configuration of the partitions is as
follows: </p>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><caption>Table 1. Logical partition configuration in compliance with license agreement</caption><thead align="left"><tr><th valign="top" id="d0e54">Partition name</th>
<th valign="top" id="d0e56">Operating system</th>
<th valign="top" id="d0e58">Processing units used by each partition</th>
<th valign="top" id="d0e60">Total processing units</th>
</tr>
</thead>
<tbody><tr><td valign="top" headers="d0e54 ">Partition A</td>
<td valign="top" headers="d0e56 "><span class="keyword">i5/OS</span></td>
<td valign="top" headers="d0e58 ">0.25</td>
<td rowspan="2" valign="top" headers="d0e60 ">2.0</td>
</tr>
<tr><td valign="top" headers="d0e54 ">Partition B</td>
<td valign="top" headers="d0e56 "><span class="keyword">i5/OS</span></td>
<td valign="top" headers="d0e58 ">1.75</td>
</tr>
<tr><td valign="top" headers="d0e54 ">Partition C</td>
<td valign="top" headers="d0e56 ">Linux<sup>®</sup></td>
<td valign="top" headers="d0e58 ">0.25</td>
<td rowspan="2" valign="top" headers="d0e60 ">1.0</td>
</tr>
<tr><td valign="top" headers="d0e54 ">Partition D</td>
<td valign="top" headers="d0e56 ">Linux</td>
<td valign="top" headers="d0e58 ">0.75</td>
</tr>
</tbody>
</table>
</div>
<p>The configuration in the previous table is in compliance with Company Y's
license agreement because only a total of 2 processing units in the shared
processing pool are being used by <span class="keyword">i5/OS</span> partitions.
However, Company Y can easily become out of compliance with their <span class="keyword">i5/OS</span> license agreement with this
configuration.</p>
<p>For instance, the system administrator powers off Partition C and moves
its processing units to Partition A. The total processing units being used
by the <span class="keyword">i5/OS</span> partitions
increase to 2.25 units. The following table shows the new partition configuration. </p>
<div class="tablenoborder"><table cellpadding="4" cellspacing="0" summary="" frame="border" border="1" rules="all"><caption>Table 2. Logical partition configuration not in compliance with license
agreement</caption><thead align="left"><tr><th valign="top" id="d0e127">Partition name</th>
<th valign="top" id="d0e129">Operating system</th>
<th valign="top" id="d0e131">Processing units used by each partition</th>
<th valign="top" id="d0e133">Total processing units</th>
</tr>
</thead>
<tbody><tr><td valign="top" headers="d0e127 ">Partition A</td>
<td valign="top" headers="d0e129 "><span class="keyword">i5/OS</span></td>
<td valign="top" headers="d0e131 ">0.50</td>
<td rowspan="2" valign="top" headers="d0e133 ">2.25</td>
</tr>
<tr><td valign="top" headers="d0e127 ">Partition B</td>
<td valign="top" headers="d0e129 "><span class="keyword">i5/OS</span></td>
<td valign="top" headers="d0e131 ">1.75</td>
</tr>
<tr><td valign="top" headers="d0e127 ">Partition C (powered off)</td>
<td valign="top" headers="d0e129 ">Linux</td>
<td valign="top" headers="d0e131 ">0.00</td>
<td rowspan="2" valign="top" headers="d0e133 ">0.75</td>
</tr>
<tr><td valign="top" headers="d0e127 ">Partition D</td>
<td valign="top" headers="d0e129 ">Linux</td>
<td valign="top" headers="d0e131 ">0.75</td>
</tr>
</tbody>
</table>
</div>
<p>When determining the total number of <span class="keyword">i5/OS</span> licenses
required, any partial processing units used by <span class="keyword">i5/OS</span> are
rounded up to the next whole number in the final count. Therefore, if Company
Y uses the configuration in the previous table, they need three <span class="keyword">i5/OS</span> licenses.
Because Company Y has only purchased two <span class="keyword">i5/OS</span> licenses,
they are out of compliance with their license agreement. To ensure that they
are in compliance with their license agreement, Company Y must either decrease
the maximum number of processing units that Partition A uses or purchase another <span class="keyword">i5/OS</span> license.</p>
<p>You must have enough <span class="keyword">i5/OS</span> licenses
to equal the maximum processor capacity of your partitions. If your processor
capacity exceeds the number of <span class="keyword">i5/OS</span> licenses
you have purchased, you will receive out of compliance messages. To stop receiving
these messages, you can contact IBM to purchase more licenses or you can
reconfigure your processor allocation.</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>
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