<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<!-- saved from url=(0014)about:internet -->
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
    <meta http-equiv="Content-Style-Type" content="text/css" />
    <meta name="GENERATOR" content="Quadralay WebWorks AutoMap 2003 Platinum Edition Client for FrameMaker 8.6.6597.0" />
    <meta name="TEMPLATEBASE" content="emwebh8-1-17" />
    <meta name="LASTUPDATED" content="08/01/13 14:47:30" />
    <title>Key Concepts </title>
    <!-- Copyright 2010-2013, Cisco Systems, Inc. All rights reserved. -->

    <link rel="StyleSheet" href="document.css" type="text/css" />
    <link rel="StyleSheet" href="catalog.css" type="text/css" />


<script> 
    var is_chrome = navigator.userAgent.toLowerCase().indexOf('chrome') > -1; 
   
    if(is_chrome){document.domain=document.domain}
   </script>
    <script type="text/javascript" language="JavaScript1.2" src="expand.js"></script>
    <script type="text/javascript" language="JavaScript1.2" src="page.js"></script>

    <script type="text/javascript" language="JavaScript1.2">
     <!--
      function  WWNoOp() {}
      function  WWNoValue() { return ""; }

      var  VarDropDown;

      if (typeof(HTMLHelp_Object) != "undefined")
      {
        VarDropDown = new WWDropDown_Object();
      }
      else
      {
        VarDropDown = new Object();
        VarDropDown.fAnchorOpen  = WWNoOp;
        VarDropDown.fAnchorClose = WWNoOp;
        VarDropDown.fDIVOpen  = WWNoOp;
        VarDropDown.fDIVClose = WWNoOp;
      }
     // -->
    </script>

  
<SCRIPT language="javascript">
<!--
  self.document.write("<link href='"+top.relPath+"shared/style.css' rel='stylesheet' type='text/css'>");
  myid=1195;
  self.document.write("<script type='text/javascript' language='JavaScript' src='"+top.relPath+"shared/con_utils.js'></scr"+"ipt>");
//-->
</SCRIPT>
</head>

  <body onload="highlightSearchTerms();" bgcolor="#ffffff">

    
    <blockquote>
    <a name="top"></a>

    
    


<a name="wp1075517"> </a><h1 class="pTitle">
Key Concepts

</h1>
<a name="wp1072599"> </a><p class="pBody">
The following terms are used throughout this chapter:

</p>
<div class="pSmartList1"><ul class="pSmartList1">
<a name="wp1072600"> </a><li class="pSmartList1">Virtual device&#8212;The virtualized or proxy representation of the real device, which is registered with 
the name server and has a pWWN and FC ID. A virtual device exists as long as its real (physical) 
counterpart is online. The virtual device pWWN and FC ID must be unique and cannot clash with 
any real device pWWNs and FC IDs.
</li>
<a name="wp1072601"> </a><li class="pSmartList1">Virtual domain&#8212;Reserved by SDV to assign FC IDs to virtual devices. If the switch that reserved 
the domain goes down, another switch takes over its role using the same domain. 
</li>
<a name="wp1072602"> </a><li class="pSmartList1">Primary device&#8212;The device that is configured as primary. By default, the primary device becomes 
the active device if it is online.
</li>
<a name="wp1072603"> </a><li class="pSmartList1">Secondary device&#8212;The additional device that is configured. By default, the secondary device is 
standby.
</li>
<a name="wp1072604"> </a><li class="pSmartList1">Active device&#8212;The device that is currently virtualized is called the active device. By default, the 
primary device becomes the active device if it is online. The active device is indicated by a (*) 
symbol.
</li>
</ul></div>
<hr /><br><p class="pBody">Copyright 2010-2013, Cisco Systems, Inc. All rights reserved.</p> 

    </blockquote>

  </body>
</html>
