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+<samba:parameter name="passdb backend"
+                 context="G"
+                 advanced="1" developer="1"
+		 xmlns:samba="http://samba.org/common">
+<listitem>
+
+    <para>This option allows the administrator to chose which backends
+    to retrieve and store passwords with. This allows (for example) both 
+    smbpasswd and tdbsam to be used without a recompile. Multiple
+    backends can be specified, separated by spaces. The backends will be
+    searched in the order they are specified. New users are always added
+	to the first backend specified. </para>
+
+    <para>This parameter is in two parts, the backend's name, and a 'location'
+    string that has meaning only to that particular backed.  These are separated
+    by a : character.</para>
+
+    <para>Available backends can include:
+	<itemizedlist>
+	    <listitem>
+		<para><command moreinfo="none">smbpasswd</command> - The default smbpasswd
+		backend. Takes a path to the smbpasswd file as an optional argument.
+		</para>
+	    </listitem>
+			
+	    <listitem>
+		<para><command moreinfo="none">smbpasswd_nua</command> - The smbpasswd
+                backend, but with support for 'not unix accounts'.  
+                Takes a path to the smbpasswd file as an optional argument.</para>
+		
+                <para>See also <link linkend="NONUNIXACCOUNTRANGE">
+                <parameter moreinfo="none">non unix account range</parameter></link></para>
+	    </listitem>
+
+	    <listitem>
+		<para><command moreinfo="none">tdbsam</command> - The TDB based password storage
+                backend.  Takes a path to the TDB as an optional argument (defaults to passdb.tdb 
+                in the <link linkend="PRIVATEDIR">
+                <parameter moreinfo="none">private dir</parameter></link> directory.</para>
+	    </listitem>
+			
+	    <listitem>
+		<para><command moreinfo="none">tdbsam_nua</command> - The TDB based password storage
+                backend, with non unix account support.  Takes a path to the TDB as an optional argument (defaults to passdb.tdb 
+                in the <link linkend="PRIVATEDIR">
+                <parameter moreinfo="none">private dir</parameter></link> directory.</para>
+		
+                <para>See also <link linkend="NONUNIXACCOUNTRANGE">
+                <parameter moreinfo="none">non unix account range</parameter></link></para>
+	    </listitem>
+			
+	    <listitem>
+		<para><command moreinfo="none">ldapsam</command> - The LDAP based passdb 
+                backend.  Takes an LDAP URL as an optional argument (defaults to 
+                <command moreinfo="none">ldap://localhost</command>)</para>
+	    </listitem>
+			
+	    <listitem>
+		<para><command moreinfo="none">ldapsam_nua</command> - The LDAP based passdb 
+                backend, with non unix account support.  Takes an LDAP URL as an optional argument (defaults to 
+                <command moreinfo="none">ldap://localhost</command>)</para>
+
+		<para>Note:  In this module, any account without a matching POSIX account is regarded
+                as 'non unix'.  </para>
+
+		<para>See also <link linkend="NONUNIXACCOUNTRANGE">
+		<parameter moreinfo="none">non unix account range</parameter></link></para>
+	                
+		<para>LDAP connections should be secured where possible.  This may be done using either
+                Start-TLS (see <link linkend="LDAPSSL"><parameter moreinfo="none">ldap ssl</parameter></link>) or by
+                specifying <parameter moreinfo="none">ldaps://</parameter> in
+                the URL argument. </para>
+	    </listitem>
+			
+	    <listitem>
+		<para><command moreinfo="none">nisplussam</command> -
+		The NIS+ based passdb backend. Takes name NIS domain as
+		an optional argument. Only works with sun NIS+ servers.
+		</para>
+	    </listitem>
+
+	</itemizedlist>
+    </para>
+
+    <para>Default: <command moreinfo="none">passdb backend = smbpasswd unixsam</command></para>
+
+    <para>Example: <command moreinfo="none">passdb backend = tdbsam:/etc/samba/private/passdb.tdb smbpasswd:/etc/samba/smbpasswd guest</command></para>
+
+	<para>Example: <command moreinfo="none">passdb backend = ldapsam_nua:ldaps://ldap.example.com guest</command></para>
+
+    <para>Example: <command moreinfo="none">passdb backend = mysql:my_plugin_args tdbsam:/etc/samba/private/passdb.tdb</command></para>
+</listitem>
+</samba:parameter>