diff --git a/victoria-metrics/alertmanager.config.yml b/victoria-metrics/alertmanager.config.yml
index d31b9d0..ab391f3 100644
--- a/victoria-metrics/alertmanager.config.yml
+++ b/victoria-metrics/alertmanager.config.yml
@@ -31,3 +31,12 @@ route:
     - alertgroup=Frigate
     group_by:
     - alertname
+
+inhibit_rules:
+- source_matchers:
+  - alertname=Free disk space is very low
+  target_matchers:
+  - alertname=Free disk space is low
+  equal:
+  - instance
+  - df
diff --git a/victoria-metrics/alerts.yml b/victoria-metrics/alerts.yml
index d29d33a..0eb721a 100644
--- a/victoria-metrics/alerts.yml
+++ b/victoria-metrics/alerts.yml
@@ -1,12 +1,35 @@
 groups:
 - name: default alert
   rules:
-  - alert: DiskUsage
+  - alert: Free disk space is low
     expr: >-
-      sum(collectd_df_df_complex{type!="free"}) by (instance, df) / sum(collectd_df_df_complex{df!="var-log", df!="var-lib-frigate"}) by (instance, df) > .75
-      or sum(collectd_df_df_complex{type!="free"}) by (instance, df) / sum(collectd_df_df_complex{df="var-log"}) by (instance, df) > .95
-      or sum(collectd_df_df_complex{type!="free"}) by (instance, df) / sum(collectd_df_df_complex{df="var-lib-frigate"}) by (instance, df) > .95
+      (
+      filesystem:usage:percent{
+        kubernetes_io_arch!="arm64",
+        df!="mmcblk0p3",
+        df!="var-lib-frigate",
+        df!="var-log",
+      }
+      or
+      filesystem:usage:percent{
+        kubernetes_io_arch="arm64",
+        df!="boot",
+      }
+      or
+      filesystem:usage:percent{
+        df="mmcblk0p3",
+        instance!="nut0.pyrocufflink.blue",
+      }
+      ) > .75
     for: 2h
+    annotations:
+      severity: minor
+  - alert: Free disk space is very low
+    expr: >-
+      filesystem:usage:percent > 0.9
+    for: 2h
+    annotations:
+      severity: minor
   - alert: TheWebsiteIsDown
     expr: >-
       probe_success{job="websites"} == 0
diff --git a/victoria-metrics/kustomization.yaml b/victoria-metrics/kustomization.yaml
index 9f5c132..6d52acc 100644
--- a/victoria-metrics/kustomization.yaml
+++ b/victoria-metrics/kustomization.yaml
@@ -38,6 +38,7 @@ configMapGenerator:
 - name: vmalert-rules
   files:
   - alerts.yml
+  - recording.yml
   options:
     disableNameSuffixHash: true
     labels:
diff --git a/victoria-metrics/recording.yml b/victoria-metrics/recording.yml
new file mode 100644
index 0000000..d2dbebc
--- /dev/null
+++ b/victoria-metrics/recording.yml
@@ -0,0 +1,8 @@
+groups:
+- name: collectd
+  rules:
+  - record: filesystem:usage:percent
+    expr: >-
+      sum without (type) (collectd_df_df_complex{type!="free"})
+      / sum without (type) (collectd_df_df_complex)
+