diff --git a/www/css/ext6-pbs.css b/www/css/ext6-pbs.css
index 706e681e..891189ae 100644
--- a/www/css/ext6-pbs.css
+++ b/www/css/ext6-pbs.css
@@ -261,6 +261,18 @@ span.snapshot-comment-column {
     content: "\f0ad";
 }
 
+.pbs-unplugged-mask div.x-mask-msg-text {
+    background: None;
+    padding: 12px 0 0;
+}
+
+.pbs-unplugged-mask:before {
+    font-size: 3em;
+    display: flex;
+    justify-content: center;
+    content: "\f1e6";
+}
+
 /* the small icons TODO move to proxmox-widget-toolkit */
 .pmx-tree-icon-custom:after {
     position: relative;
diff --git a/www/datastore/Summary.js b/www/datastore/Summary.js
index b8d1284b..89556865 100644
--- a/www/datastore/Summary.js
+++ b/www/datastore/Summary.js
@@ -61,16 +61,21 @@ Ext.define('PBS.DataStoreInfo', {
 		Proxmox.Utils.API2Request({
 		    url: `/config/datastore/${me.view.datastore}`,
 		    success: function(response) {
-			const config = response.result.data;
-			if (config['maintenance-mode']) {
-			    const [_type, msg] = PBS.Utils.parseMaintenanceMode(config['maintenance-mode']);
-			    me.view.el.mask(
-				`${gettext('Datastore is in maintenance mode')}${msg ? ': ' + msg : ''}`,
-				'fa pbs-maintenance-mask',
-			    );
-			} else {
+			let maintenanceString = response.result.data['maintenance-mode'];
+			let removable = !!response.result.data['backing-device'];
+			if (!maintenanceString && !removable) {
 			    me.view.el.mask(gettext('Datastore is not available'));
+			    return;
 			}
+
+			let [_type, msg] = PBS.Utils.parseMaintenanceMode(maintenanceString);
+			let isUnplugged = !maintenanceString && removable;
+			let maskMessage = isUnplugged
+			    ? gettext('Datastore is not mounted')
+			    : `${gettext('Datastore is in maintenance mode')}${msg ? ': ' + msg : ''}`;
+
+			let maskIcon = isUnplugged ? 'fa pbs-unplugged-mask' : 'fa pbs-maintenance-mask';
+			me.view.el.mask(maskMessage, maskIcon);
 		    },
 		});
 		return;