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<h1 class="topictitle1">Independent disk pools</h1>
<div><p>An independent disk pool contains user data and all of the necessary system
information associated with the data. An independent disk pool can be made
available (varied on) and made unavailable (varied off) to the server without
restarting the system. When an independent disk pool is associated with a
switchable hardware group, it becomes a switchable disk pool and can be switched
between iSeries™ servers
in a clustered environment. An independent disk pool that is not associated
with a cluster resource group is dedicated to one iSeries server. Independent disk pools
can also function in conjunction with other independent disk pools in a disk
pool group. Independent disk pools are numbered 33 through 255.</p>
<p>Before you use independent disk pools in your environment, it is important
to understand some key concepts, including important terminology, as well
as how independent disk pools work and how they can be beneficial. </p>
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<ul class="ullinks">
<li class="ulchildlink"><strong><a href="rzalyterminology.htm">Independent disk pool terminology</a></strong><br />
</li>
<li class="ulchildlink"><strong><a href="rzalybenefits.htm">Benefits of independent disk pools</a></strong><br />
</li>
<li class="ulchildlink"><strong><a href="rzalyhowiaspswork.htm">How independent disk pools work</a></strong><br />
</li>
<li class="ulchildlink"><strong><a href="rzalystructure.htm">Recommended structure for independent disk pools</a></strong><br />
</li>
<li class="ulchildlink"><strong><a href="rzalyswitchablevsstandalone.htm">Switchable and stand-alone independent disk pools</a></strong><br />
</li>
<li class="ulchildlink"><strong><a href="rzalydiskpoolgroups.htm">Disk pool groups</a></strong><br />
</li>
<li class="ulchildlink"><strong><a href="rzalygeographicmirror.htm">Geographic mirroring</a></strong><br />
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<div class="parentlink"><strong>Parent topic:</strong> <a href="rzalyiasptypes.htm">Types of disk pools</a></div>
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