diff --git a/machines/nazuna/hardware-configuration.nix b/machines/nazuna/hardware-configuration.nix
index 8b1fcbf..6972f73 100644
--- a/machines/nazuna/hardware-configuration.nix
+++ b/machines/nazuna/hardware-configuration.nix
@@ -5,6 +5,8 @@
     (modulesPath + "/profiles/qemu-guest.nix")
   ];
 
+  sbruder.machine.isVm = true;
+
   boot = {
     kernelParams = [ "ip=86.106.183.111/26::86.106.183.65::nazuna" ];
     initrd = {
@@ -50,7 +52,4 @@
       };
     };
   };
-
-  # no smart on qemu disk
-  services.smartd.enable = false;
 }
diff --git a/machines/okarin/hardware-configuration.nix b/machines/okarin/hardware-configuration.nix
index c507f4a..c83ce20 100644
--- a/machines/okarin/hardware-configuration.nix
+++ b/machines/okarin/hardware-configuration.nix
@@ -1,6 +1,8 @@
 { lib, modulesPath, ... }:
 
 {
+  sbruder.machine.isVm = true;
+
   boot = {
     kernelModules = [ ];
     extraModulePackages = [ ];
@@ -65,7 +67,4 @@
       };
     };
   };
-
-  # no smart on virtual disk
-  services.smartd.enable = false;
 }
diff --git a/machines/renge/hardware-configuration.nix b/machines/renge/hardware-configuration.nix
index dc8f24f..2f23423 100644
--- a/machines/renge/hardware-configuration.nix
+++ b/machines/renge/hardware-configuration.nix
@@ -5,6 +5,8 @@
     (modulesPath + "/profiles/qemu-guest.nix")
   ];
 
+  sbruder.machine.isVm = true;
+
   boot = {
     kernelModules = [ ];
     extraModulePackages = [ ];
@@ -66,7 +68,4 @@
       };
     };
   };
-
-  # no smart on qemu disk
-  services.smartd.enable = false;
 }
diff --git a/machines/vueko/hardware-configuration.nix b/machines/vueko/hardware-configuration.nix
index 51b0803..34929a9 100644
--- a/machines/vueko/hardware-configuration.nix
+++ b/machines/vueko/hardware-configuration.nix
@@ -5,6 +5,8 @@
     (modulesPath + "/profiles/qemu-guest.nix")
   ];
 
+  sbruder.machine.isVm = true;
+
   boot = {
     kernelParams = [ "ip=dhcp" ];
     initrd = {
@@ -45,7 +47,4 @@
       };
     };
   };
-
-  # no smart on qemu disk
-  services.smartd.enable = false;
 }
diff --git a/modules/default.nix b/modules/default.nix
index 7373c26..4ad01d0 100644
--- a/modules/default.nix
+++ b/modules/default.nix
@@ -13,6 +13,13 @@
     };
     trusted = (lib.mkEnableOption "the trusted status of this machine (i.e. encrypted root)") // { default = true; };
     gui.enable = lib.mkEnableOption "gui";
+    machine = {
+      isVm = lib.mkOption {
+        type = lib.types.bool;
+        description = "Whether this machine is a virtual machine.";
+        default = false;
+      };
+    };
   };
 
   # All modules are imported but non-essential modules are activated by
@@ -87,8 +94,6 @@
       # command-not-found does not work without channels
       programs.command-not-found.enable = false;
 
-      # Hard drive monitoring
-      services.smartd.enable = lib.mkDefault true;
       # Network monitoring
       services.vnstat.enable = true;
       environment.etc."vnstat.conf".text = ''
@@ -146,8 +151,11 @@
         '';
       };
     }
-    (lib.mkIf config.sbruder.full {
-      services.fwupd.enable = true;
+    (lib.mkIf (!config.sbruder.machine.isVm) {
+      # Hard drive monitoring
+      services.smartd.enable = lib.mkDefault true;
+      # Firmware updates
+      services.fwupd.enable = lib.mkDefault true;
     })
     (lib.mkIf (!config.sbruder.full) {
       documentation.enable = lib.mkDefault false;