diff --git a/img/network.png b/img/network.png
index 6583882..9b817de 100644
--- a/img/network.png
+++ b/img/network.png
Binary files differ
diff --git a/index.html b/index.html
index aff7bf9..965c51d 100755
--- a/index.html
+++ b/index.html
@@ -51,17 +51,20 @@
   <td>
     <table class="border">
 	    <tr>
-	        <th colspan="3">Raspberry pi 3 B+</th>
+	        <th colspan="3">ark-a</th>
 	    </tr>
 		<tr>
             <td width="30" height="230"></td>
             <td width="220">
+                <a href="https://surveyor.mydns.jp/nextcloud/">
+                    <img src="img/nextcloud_logo.png" width="80" alt="nextcloud"/><br/>nextcloud(8080)
+                </a><br/> (docker)
             </td>
             <td width="30"></td>
 		</tr>
         <tr>
             <td colspan="3" height="30">
-                <p align="right">raspi3: 192.168.0.201</p>
+                <p align="right">ark-a: 192.168.0.204</p>
             </td>
         </tr>
     </table>
@@ -93,9 +96,6 @@
 		</a><br/>(docker)
             </td>
             <td width="110">
-                <a href="http://macmini:8080/apps/dashboard/">
-                    <img src="img/nextcloud_logo.png" width="80" alt="nextcloud"/><br/>nextcloud(8080)
-                </a><br/> (docker)
             </td>
             <td width="30"></td>
 		</tr>
diff --git a/uml/network.pu b/uml/network.pu
index dbf1d8c..ec81341 100644
--- a/uml/network.pu
+++ b/uml/network.pu
@@ -14,7 +14,7 @@
     color = "#FFAAAA";
     raspi2;
     macmini;
-    ark-c;
+    ark-a;
   }
 
   network DMZ {
@@ -23,13 +23,13 @@
     raspi2 [address = ".200", description="<$osa_server_proxy>\nraspi2"];
     raspi3 [address = ".201", shape=node];
     t3400 [address = ".203", shape=node];
-    ark-a [address = ".204", shape=node];
     ark-b [address = ".205", shape=node];
+    ark-c [address = ".206", shape=node];
   }
   network {
     raspi2;
     macmini [address = ".202", description="<$osa_server_application>\nmacmini"];
-    ark-c [address = ".206", description="<$osa_server_database>\nark-c"];
+    ark-a [address = ".204", description="<$osa_server_database>\nark-a"];
   }
   network DHCP {
     address = "192.168.0.0/24";