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<h1 class="topictitle1">Logical partition concept: dedicated processor</h1>
<div><p>Dedicated processors are whole processors that are used exclusively
by the partition to which they are assigned. The dedicated processor handles
the processing for a specific logical partition.</p>
<p>If you choose to assign dedicated processors to a logical partition, you
must assign at least one processor to that partition. Likewise, if you choose
to remove processor resources from a dedicated partition, you must remove
at least one processor from the partition.</p>
<p>To adjust to changing workloads, you can move dedicated processors within
the minimum/maximum values you establish without needing to restart the partition.
These values enable you to establish a range within which you can dynamically
move the resource without needing to restart the logical partition. When you
change the minimum/maximum values, it requires you to restart the partition.
Minimum values dictate what is required to restart the partition. If the minimum
value is not met for all logical partitions, only the primary will restart.</p>
<p><br /><img src="rzait517.gif" alt="Picture showing a partitioned iSeries using dedicated processors." /><br /> </p>
<p>For example, a server with 4 physical processors can have 3 logical partitions
with two partitions having 1 dedicated processor and one partition having
2 dedicated processors.</p>
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<div class="familylinks">
<div class="parentlink"><strong>Parent topic:</strong> <a href="rzaitprocessor.htm" title="A processor is a device that executes programmed instructions.">Logical partition concept: Processor</a></div>
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<div class="relconcepts"><strong>Related concepts</strong><br />
<div><a href="rzaitchoosenumber.htm" title="The number of processors you want to add to a logical partition depends on the planned workload for the partition and the desired level of performance.">Determine the possible number of logical partitions</a></div>
</div>
<div class="reltasks"><strong>Related tasks</strong><br />
<div><a href="rzaithardwarereq.htm" title="Understand the basic hardware concepts and requirements to partition your server.">Hardware for logical partitions</a></div>
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