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    <title>Using the SAN Extension Tuner Wizard </title>
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<a name="wp1082246"> </a><h1 class="pTitle">
Using the SAN Extension Tuner Wizard

</h1>
<a name="wp1082247"> </a><p class="pBody">
You can use the SAN Extension Tuner wizard to perform the these tasks:

</p>
<div class="pSmartList1"><ul class="pSmartList1">
<a name="wp1082248"> </a><li class="pSmartList1">Configuring nWWN ports
</li>
<a name="wp1082249"> </a><li class="pSmartList1">Enabling iSCSI
</li>
<a name="wp1082250"> </a><li class="pSmartList1">Configuring Virtual N ports
</li>
<a name="wp1082251"> </a><li class="pSmartList1">Assigning SCSI read and write CLI commands
</li>
<a name="wp1082252"> </a><li class="pSmartList1">Assigning SCSI tape read and write CLI commands
</li>
<a name="wp1082253"> </a><li class="pSmartList1">Configuring a data pattern for SCSI commands
</li>
</ul></div>
<a name="wp1082254"> </a><h2 class="pHeading2">
Detailed Steps
</h2>
<a name="wp1082255"> </a><p class="pBody">
To tune the required FCIP link using the SAN Extension Tuner Wizard in Cisco DCNM-SAN, follow 
these steps:

</p>
<div class="pSmartList1"><ol type="1" class="pSmartList1">
<a name="wp1082256"> </a><li class="pSmartList1">Right-click a valid FCIP link in the Fabric pane, and then select <b class="cBold">SAN Extension Tuner </b>from the 
drop-down list. You can also highlight the link and choose <span style="font-weight: bold">Tools &gt; Other &gt; SAN Extension Tuner</span>. 
</li>
<a name="wp1082257"> </a><p class="pListBodyLevel1">
You see the Select Ethernet Port Pair dialog box. 

</p>
<a name="wp1082258"> </a><li class="pSmartList1">Select the Ethernet port pairs that correspond to the FCIP link you want to tune and click <span style="font-weight: bold">Next</span>.
</li>
<a name="wp1082259"> </a><p class="pListNote1">
<strong>Note	&nbsp;&nbsp;&nbsp;</strong> The Ethernet ports you select should be listed as down.

</p>
<a name="wp1082260"> </a><p class="pListBodyLevel1">
You see the Specify Parameters dialog box. 

</p>
<a name="wp1082261"> </a><li class="pSmartList1">Create and activate a new zone to ensure that the virtual N ports are not visible to real initiators in the 
SAN by clicking <span style="font-weight: bold">Yes</span> to the zone creation dialog box.
</li>
<a name="wp1082262"> </a><p class="pBodyRelative">

</p>
<a name="wp1082263"> </a><li class="pSmartList1">(Optional) Change the default settings for the transfer data size and the number of concurrent SCSI read 
and write commands as follows:
</li>
<div class="pSmartList2"><ol type="a" class="pSmartList2">
<a name="wp1082264"> </a><li class="pSmartList2">Set Transfer Size<span style="font-weight: bold"> </span>to the number of bytes that you expect your applications to use over the FCIP link.</li>
<a name="wp1082265"> </a><li class="pSmartList2">Set Read I/0 to the number of concurrent SCSI read commands you expect your applications to generate over the FCIP link.</li>
<a name="wp1082266"> </a><li class="pSmartList2">Set Write I/0 to the number of concurrent outstanding SCSI write commands you expect your applications to generate over the FCIP link.</li>
</ol></div>
<a name="wp1082267"> </a><p class="pListNote1">
<strong>Note	&nbsp;&nbsp;&nbsp;</strong> There is only one outstanding I/O at a time to the virtual N port that emulates the tape behavior.

</p>
<div class="pSmartList2"><ol type="a" class="pSmartList2">
<a name="wp1082268"> </a><li class="pSmartList2">Check the <span style="font-weight: bold">Use Pattern File</span> check box and select a file that you want to use to set the data pattern that is generated by the SAN extension tuner. See the <a href="tune03.html">&quot;Data Pattern&quot; topic</a>.</li>
</ol></div>
<a name="wp1082272"> </a><li class="pSmartList1">Click <span style="font-weight: bold">Next</span>.
</li>
<a name="wp1082273"> </a><p class="pListBodyLevel1">
You see the Results dialog box. 

</p>
<a name="wp1082274"> </a><li class="pSmartList1">Click <span style="font-weight: bold">Start</span> to start the tuner. The tuner sends a continuous stream of traffic until you click <span style="font-weight: bold">Stop</span>.
</li>
<a name="wp1082275"> </a><li class="pSmartList1">Click <span style="font-weight: bold">Show</span> to see the latest tuning statistics. You can select this while the tuner is running or after you 
stop it.
</li>
<a name="wp1082276"> </a><li class="pSmartList1">Click <span style="font-weight: bold">Stop</span> to stop the SAN extension tuner.
</li>
</ol></div>
<hr /><br><p class="pBody">Copyright 2010-2013, Cisco Systems, Inc. All rights reserved.</p> 

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