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    <title>Configuring a Virtual Device </title>
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<a name="wp1072935"> </a><h1 class="pTitle">
Configuring a Virtual Device

</h1>
<a name="wp1072936"> </a><p class="pBody">
A virtual device is identified by an alphanumeric name of up to 32 characters and defines all the real 
devices (one primary and one or more secondary) that it represents. Upon the successful creation of a 
virtual device, the virtual device name is internally registered as the device alias name with the device 
alias database; the pWWN is automatically assigned by the system using Cisco Organizational Unique 
Identifier (OUI). A virtual device appears as a real, physical device. You can enumerate up to 128 devices 
for a virtual device. There is a limit of 4095 on the number of virtual devices that you can create in a 
single VSAN.

</p>
<a name="wp1072937"> </a><p class="pBodyAutonumNoRule">
<strong>Note	&nbsp;&nbsp;&nbsp;</strong> As of Cisco MDS SAN-OS Release 3.1(2) and NX-OS Release 4.1(1a), SDV supports up to 1024 virtual 
devices per VSAN.

</p>
<a name="wp1072948"> </a><h2 class="pHeading2">
Detailed Steps
</h2>
<a name="wp1105474"> </a><p class="pBody">
To configure a virtual target and commit it to the fabric configuration, follow these steps:

</p>
<div class="pSmartList1"><ol type="1" class="pSmartList1">
<a name="wp1105475"> </a><li class="pSmartList1">Expand SAN in the Logical Domains pane, and then expand the fabric in which your VSAN resides. 
</li>
<a name="wp1105476"> </a><li class="pSmartList1">Expand the VSAN in which you want to create the virtual target and select SDV. You see the switches 
in the VSAN that you selected listed in the Information pane.
</li>
<a name="wp1105477"> </a><li class="pSmartList1">In the <b class="cBold">Control</b> tab, select <span style="font-weight: bold">enable</span> from the drop-down menu in the Command column to enable SAN 
device virtualization for a particular switch in the VSAN. 
</li>
<a name="wp1105478"> </a><li class="pSmartList1">Click the<b class="cBold"> Apply Changes </b>icon to commit the configuration change.
</li>
<a name="wp1105479"> </a><li class="pSmartList1">Click the <b class="cBold">CFS</b> tab. Confirm that the SAN device virtualization feature is enabled for the switch.
</li>
<a name="wp1105480"> </a><li class="pSmartList1">Click the<b class="cBold"> Virtual Devices </b>tab and then click the <b class="cBold">Create Row </b>icon. 
</li>
<a name="wp1105481"> </a><p class="pListBodyLevel1">
You see the Create Virtual Devices dialog box. 

</p>
<a name="wp1105482"> </a><li class="pSmartList1">Select the Virtual Device ID from the drop-down list (ranges from 1 to 4096). 
</li>
<a name="wp1105483"> </a><li class="pSmartList1">Enter a Name for the Virtual Device. Select the Virtual Domain and enter a Virtual FC ID for the virtual 
target. 
</li>
<a name="wp1105484"> </a><li class="pSmartList1">Check only the <span style="font-weight: bold">autoFailover</span> check box or check the <span style="font-weight: bold">autoFailover</span> and <span style="font-weight: bold">primFallback</span> check boxes. For 
more information, see the <a href="sandv04.html">&quot;Automatic Failover and Fallback&quot; topic</a>. You can also change the option in 
the Option column of the Virtual Devices tab. 
</li>
<a name="wp1105488"> </a><p class="pBodyRelative">

</p>
<a name="wp1105489"> </a><li class="pSmartList1">Click <b class="cBold">Create </b>to create the virtual target.
</li>
<a name="wp1105490"> </a><li class="pSmartList1">Click the<b class="cBold"> CFS </b>icon to commit and distribute the configuration changes. 
</li>
</ol></div>
<a name="wp1092160"> </a><h2 class="pHeading2">
Examples
</h2>
<a name="wp1105506"> </a><p class="pBody">
The pWWN of the virtual target does not appear in the zoning end devices database in DCNM-SAN. If 
you want to zone the virtual device with a pWWN, you must enter it in the Add Member to Zone dialog 
box when creating a zone. However, if the device alias is in enhanced mode, the virtual device names 
appear in the device alias database in the DCNM-SAN zoning window. In this case, users can choose to 
select either the device alias name or enter the pWWN in the Add Member to Zone dialog box. <br />
<br />
For more information, see the <a href="zone28.html">&quot;Adding Zone Members&quot; topic</a>.

</p>
<hr /><br><p class="pBody">Copyright 2010-2013, Cisco Systems, Inc. All rights reserved.</p> 

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