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<a class="WebWorks_Breadcrumb_Link" href="Config_Units.6.1.html#2064169">Configuring Units</a> &gt; <a class="WebWorks_Breadcrumb_Link" href="Config_Units.6.2.html#2064169">Configuring a New Unit</a> &gt; Creating a Unit </div>
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<div class="Heading2"><a name="2064169">Creating a Unit </a></div>
<div class="Body"><a name="1155641">In 3DM2, creating a unit starts from the </a><span class="UI-Element">Management &gt;&gt;</span> <span class="UI-Element">Maintenance</span> page.</div>
<div class="Figure" onclick="WebWorks_ToggleDIV(WebWorksRootPath, &quot;wwdd1207055&quot;);"><a name="1207055">Show </a>3DM2 Maintenance Page <script type="text/javascript" language="JavaScript1.2">WebWorks_WriteArrow(WebWorksRootPath, "wwdd1207055", false);</script></div>
<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteDIVOpen("wwdd1207055", false);</script>
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<span class="Red"> </span><a name="1192598"><img id="1192596" class="Default" src="images/9750_Maintenance.png" width="799" height="753" style="display: inline; float: none; left: 0.0; text-align: left; top: 0.0;" /></a></div>
<div class="ToDo"><a name="1151231">To crea</a>te a unit</div>
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<span class="UI-Element">1 </span>
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<div class="NumberedFirst_inner"><a name="1070248">In 3DM2, choose </a><span class="UI-Element">Management &gt;&gt; Maintenance.</span></div>
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<span class="UI-Element">2 </span>
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<div class="Numbered_inner"><a name="2192375">In the Available Drives list, select the drives you want to include in the </a>unit by marking the checkbox in front of the VPort number for each one. </div>
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<div class="Indent"><a name="2192376">All drives in a unit must be of the same type</a>—either SAS or SATA.</div>
<div class="Indent"><a name="2003416">Although the best practice is to create a unit from drives in the same </a>enclosure, you can create a unit with drives from different enclosures.</div>
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<div class="Numbered_inner"><a name="1078340">Click </a><span class="UI-Element">Create Unit</span>.</div>
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<div class="Indent"><a name="1116526">A window similar to the one below shows the drives you selected, and </a>lets you specify configuration settings.</div>
<div class="FigureIndent" onclick="WebWorks_ToggleDIV(WebWorksRootPath, &quot;wwdd1207065&quot;);"><a name="1207065">Show </a>Configuring a Unit in 3DM2<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteArrow(WebWorksRootPath, "wwdd1207065", false);</script></div>
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<div class="anchor-indented"><a name="1116530"><img id="1116528" class="Default" src="images/951_CreateUnit_3DM.jpg" width="686" height="287" style="display: inline; float: none; left: 0.0; text-align: left; top: 0.0;" /></a></div>
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<span class="UI-Element">4 </span>
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<div class="Numbered_inner"><a name="1116514">In the </a><span class="UI-Element">Type</span> field, select the RAID configuration you want.</div>
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<div class="Numbered_inner"><a name="1116515">If stripe size applies to the RAID type you select, select a </a><span class="UI-Element">Stripe Size</span>. (Stripe size does not apply to RAID 1.)</div>
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<div class="Numbered_inner"><a name="1116516">Optional: In the </a><span class="UI-Element">Name</span> box, enter a name for the unit (up to 21 characters, including dashes and underscores). </div>
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<span class="UI-Element">7 </span>
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<div class="Numbered_inner"><a name="1972865">If you have 12 drives attached to the controller and selected RAID 50 as </a>the configuration in step 3, select whether you want 3, 4, or 6 Drives Per Subunit, as shown here. </div>
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<div class="FigureIndent" onclick="WebWorks_ToggleDIV(WebWorksRootPath, &quot;wwdd2171312&quot;);"><a name="2171312">Show </a>Configuring a RAID 50 with 12 Drives<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteArrow(WebWorksRootPath, "wwdd2171312", false);</script></div>
<script type="text/javascript" language="JavaScript1.2">WebWorks_WriteDIVOpen("wwdd2171312", false);</script>
<div class="anchor-indented"><a name="2171316"><img id="2171314" class="Default" src="images/RAID-50-12-drives-select-drives.gif" width="659" height="421" style="display: inline; float: none; left: 0.0; text-align: left; top: 0.0;" /></a></div>
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<span class="UI-Element">8 </span>
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<div class="Numbered_inner"><a name="1082544">Make changes to the unit policies, as desired. You can enable or disable </a>the <span class="UI-Element">Write Cache</span>, <span class="UI-Element">Auto-Verify</span>, and <span class="UI-Element">Overwrite ECC</span>. You can also set the <span class="UI-Element">StorSave</span> policy, the <span class="UI-Element">Rapid RAID Recovery</span> policy, and the <span class="UI-Element">Read Cache</span> policy</div>
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<div class="Indent"><a name="1320763">For details about these settings, see </a><a href="Config_Units.6.8.html#1157287">Setting Unit Policies</a>.</div>
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<div class="Numbered_inner"><a name="1320768">Click </a><span class="UI-Element">OK</span>.</div>
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<div class="Indent"><a name="1320769">The new unit appears in the Unit Maintenance list at the top of the page </a>and the operating system is notified of the new unit.</div>
<div class="Indent"><a name="1431319">If you have auto-carving enabled and the size of your unit exceeds the </a>carve size, you might see multiple unit volumes in your operating system. For details, see <a href="Config_Controller.5.6.html#1091097">Using Auto-Carving for Multi LUN Support</a>.</div>
<div class="Indent"><a name="2171334">In FreeBSD, Linux, Mac OS X, OpenSolaris, and VMware a device node </a>will now be associated with each unit created. In Windows, the device manager will reflect the changes under the disk drives icon.</div>
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<div class="Numbered_inner"><a name="2171335">Partition, format, and mount the unit. The required steps will vary </a>depending on the operating system. For details, see <a href="Config_Units.6.5.html#2171629">Partitioning, Formatting, and Mounting Units</a>.</div>
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<div class="anchor-indented"><a name="2319127">&nbsp;</a></div>
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<img src="Note.gif" alt="*" id="bullet2171341" border="0" width="27" height="34" /><a name="2171341">&nbsp;</a></div>
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<div class="CellBody"><span class="NoteHeading"><a name="2171343">Note:</a></span> For RAID 5 and RAID 6 units with five or more disks, and RAID 50 units with subunits of five drives or more, initialization (synchronization) of the unit begins immediately.</div>
<div class="CellBody"><a name="2171344">The unit can be used while it is initializing and is fault-tolerant. </a></div>
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<dl>
<dt>Related Topics</dt>
<dd>
<div class="RelatedTopic"><a href="Config_Units.6.3.html#1156673" name="2407216">Configuration Options When Creating a Unit</a></div>
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<div class="RelatedTopic"><a href="Maintenance.html#1665709" name="2407224">Maintenance page</a></div>
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