diff --git a/hosts/Rupert.nix b/hosts/Rupert.nix
index 451ac50..08b79b6 100644
--- a/hosts/Rupert.nix
+++ b/hosts/Rupert.nix
@@ -146,6 +146,22 @@ in
             };
         };
     };
+    services.beesd = {
+        filesystems = {
+            "data" = {
+                spec = "/data";
+                hashTableSizeMB = 1024;
+                verbosity = "alert";
+            };
+            "backup-disk" = {
+                spec = "/mnt/backup";
+                hashTableSizeMB = 1024;
+                verbosity = "alert";
+            };
+        };
+    };
+    # Don’t start automatically
+    systemd.services."beesd@backup-disk".wantedBy = lib.mkForce [];
 
     security.acme = {
         defaults = {