diff --git a/config.php.default b/config.php.default
index 57424edf38..490f9b6685 100755
--- a/config.php.default
+++ b/config.php.default
@@ -124,11 +124,6 @@ $config['allow_entity_sensor']['watts'] = 1;
 $config['allow_entity_sensor']['truthvalue'] = 1;
 $config['allow_entity_sensor']['specialEnum'] = 1;
 
-### Mountpoints to ignore
-
-$config['ignore_mount_removable'] = 1; # Ignore removable disk storage
-$config['ignore_mount_network']   = 1; # Ignore network mounted storage
-
 ### Hardcoded ASN descriptions
 
 # $config['astext'][65333] = "Cymru Bogon Feed";
diff --git a/includes/defaults.inc.php b/includes/defaults.inc.php
index 09c492def4..049cec01fd 100644
--- a/includes/defaults.inc.php
+++ b/includes/defaults.inc.php
@@ -71,6 +71,9 @@ $config['bad_if_regexp'] = array("/serial[0-9]:/");
 
 $config['processor_filter'][] = "An electronic chip that makes the computer work.";
 
+$config['ignore_mount_removable'] = 1; # Ignore removable disk storage
+$config['ignore_mount_network']   = 1; # Ignore network mounted storage
+$config['ignore_mount_optical']   = 1; # Ignore mounted optical discs
 
 # Sensors
 
diff --git a/includes/discovery/storage-hrstorage.inc.php b/includes/discovery/storage-hrstorage.inc.php
index 9b518d9f26..d0eeb625b3 100755
--- a/includes/discovery/storage-hrstorage.inc.php
+++ b/includes/discovery/storage-hrstorage.inc.php
@@ -4,28 +4,30 @@ $storage_array = snmp_cache_oid("hrStorageEntry", $device, array(), "HOST-RESOUR
 
 if(is_array($storage_array)) {
   echo("hrStorage : ");
-  foreach($storage_array[$device[device_id]] as $index => $storage) {
+  foreach($storage_array[$device[device_id]] as $index => $storage) 
+  {
     foreach($config['ignore_mount'] as $bi) { if($bi == $descr) { $deny = 1; if ($debug) echo("$bi == $descr \n"); } }
     foreach($config['ignore_mount_string'] as $bi) { if(strpos($descr, $bi) !== FALSE) { $deny = 1; if ($debug) echo("$descr, $bi \n"); } }
     foreach($config['ignore_mount_regexp'] as $bi) { if(preg_match($bi, $descr)) { $deny = 1; if ($debug) echo("$bi, $descr \n"); } }
-    if (isset($config['ignore_mount_removable']) && $config['ignore_mount_removable'] && $fstype == "hrStorageRemovableDisk") { $deny = 1; if ($debug) echo("skip(removable)\n"); }
-    if (isset($config['ignore_mount_network']) && $config['ignore_mount_network'] && $fstype == "hrStorageNetworkDisk") { $deny = 1; if ($debug) echo("skip(network)\n"); }
-
-    $type = $storage['hrStorageType'];
+    $fstype = $storage['hrStorageType'];
     $descr = $storage['hrStorageDescr'];
     $size = $storage['hrStorageSize'] * $storage['hrStorageAllocationUnits'];
     $used = $storage['hrStorageUsed'] * $storage['hrStorageAllocationUnits'];
     $units = $storage['hrStorageAllocationUnits'];
 
+    if (isset($config['ignore_mount_removable']) && $config['ignore_mount_removable'] && $fstype == "hrStorageRemovableDisk") { $deny = 1; if ($debug) echo("skip(removable)\n"); }
+    if (isset($config['ignore_mount_network']) && $config['ignore_mount_network'] && $fstype == "hrStorageNetworkDisk") { $deny = 1; if ($debug) echo("skip(network)\n"); }
+    if (isset($config['ignore_mount_optical']) && $config['ignore_mount_optical'] && $fstype == "hrStorageCompactDisc") { $deny = 1; if ($debug) echo("skip(cd)\n"); }
+
     if(!$deny && is_numeric($index)) {
-      discover_storage($valid_storage, $device, $index, $type, "hrstorage", $descr, $size , $units, $used);
+      discover_storage($valid_storage, $device, $index, $fstype, "hrstorage", $descr, $size , $units, $used);
     }
 
     #$old_storage_rrd  = $config['rrd_dir'] . "/" . $device['hostname'] . "/" . safename("hrStorage-" . $index . ".rrd");
     #$storage_rrd  = $config['rrd_dir'] . "/" . $device['hostname'] . "/" . safename("storage-hrstorage-" . $index . ".rrd");
     #if(is_file($old_storage_rrd)) { rename($old_storage_rrd,$storage_rrd); }
 
-    unset($deny, $type, $descr, $size, $used, $units, $storage_rrd, $old_storage_rrd, $storage_array);
+    unset($deny, $fstype, $descr, $size, $used, $units, $storage_rrd, $old_storage_rrd, $storage_array);
 
   }
 }