216 lines
11 KiB
HTML
216 lines
11 KiB
HTML
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<a class="WebWorks_Breadcrumb_Link" href="Config_Units.6.1.html#2055961">Configuring Units</a> > Changing An Existing Configuration by Migrating</div>
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<div class="Heading1"><a name="2055961">Changing An Existing Configuration by </a>Migrating</div>
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<div class="BodyAfterHead"><a name="2057224">You can convert one RAID configuration into another while the unit is online. </a>This process is known as RAID Level Migration (RLM).</div>
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<div class="BodyAfterHead"><a name="1105027">You can use RAID Level Migration to make two main types of configuration </a>changes:</div>
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<div class="Bullet_inner"><a name="1105028">RAID Level (for example, a RAID 1 to a RAID 5)</a></div>
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<div class="Bullet_inner"><a name="1105029">Unit Capacity Expansion (for example, adding a 4th drive to a 3-drive </a>RAID 5)</div>
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<div class="Body"><a name="1108523">You can also use RLM to change the stripe size of a unit.</a></div>
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<span class="Red"> </span><a name="1452588"> </a></div>
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<div class="CellBody"><span class="NoteHeading"><a name="1452597">Note:</a></span> A unit being migrated can still be used (I/O still continues), however the performance will be affected while the migrating task is active. You can control how much effect this has on performance by setting the background task rate. For more information, see <a href="Maintain_Units.7.24.html#1585765">Setting Background Task Rate</a>.</div>
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<div class="Body"><a name="1452600">This section includes the following topics about changing existing </a>configurations:</div>
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<div class="Bullet_inner"><a href="Config_Units.6.17.html#1104694" name="1104872">RAID Level Migration (RLM) Overview</a></div>
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<div class="Bullet_inner"><a href="Config_Units.6.18.html#1432690" name="1104873">Changing RAID Level</a></div>
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<div class="Bullet_inner"><a href="Config_Units.6.19.html#1438042" name="1105005">Expanding Unit Capacity</a></div>
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<div class="Bullet_inner"><a href="Config_Units.6.20.html#1112868" name="1105006">Informing the Operating System of Changed Configuration</a></div>
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<div class="Body"><a name="1261265">If you want to change the policy settings for an existing unit, there is no need </a>to change the configuration. See <a href="Config_Units.6.8.html#1157287">Setting Unit Policies</a>.</div>
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<a href="http://www.lsi.com/channel/products" target="_blank">LSI Corporation</a>
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<p style="font-size: .8em">Copyright LSI 2004-2010<br />
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To contact Support, go to <a href="http://www.lsi.com/channel/ContactUs">http://www.lsi.com/channel/ContactUs</a></p>
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