diff --git a/services/monitoring/prometheus.nix b/services/monitoring/prometheus.nix
index d0d2117..c5f91d7 100644
--- a/services/monitoring/prometheus.nix
+++ b/services/monitoring/prometheus.nix
@@ -192,6 +192,32 @@
                 annotations:
                   summary: "Mosquitto not running on {{ $labels.instance }}"
                   description: "Mosquitto has been down on {{ $labels.instance }} more than 5 minutes."
+          - name: smartctl_rules
+            rules:
+              - alert: SmartCriticalWarning
+                expr: smartctl_device_critical_warning > 0
+                for: 0m
+                labels:
+                  severity: critical
+                annotations:
+                  summary: SMART critical warning (instance {{ $labels.instance }})
+                  description: "Disk controller has critical warning on {{ $labels.instance }} drive {{ $labels.device }})\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"
+              - alert: SmartMediaErrors
+                expr: smartctl_device_media_errors > 0
+                for: 0m
+                labels:
+                  severity: critical
+                annotations:
+                  summary: SMART media errors (instance {{ $labels.instance }})
+                  description: "Disk controller detected media errors on {{ $labels.instance }} drive {{ $labels.device }})\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"
+              - alert: SmartWearoutIndicator
+                expr: smartctl_device_available_spare < smartctl_device_available_spare_threshold
+                for: 0m
+                labels:
+                  severity: critical
+                annotations:
+                  summary: SMART Wearout Indicator (instance {{ $labels.instance }})
+                  description: "Device is wearing out on {{ $labels.instance }} drive {{ $labels.device }})\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"
       ''
     ];