diff --git a/infrastructure/core/node-maintenance.yaml b/infrastructure/core/node-maintenance.yaml
index 98c4134b..a3ddf14f 100644
--- a/infrastructure/core/node-maintenance.yaml
+++ b/infrastructure/core/node-maintenance.yaml
@@ -106,3 +106,18 @@ metadata:
     atlas.bstein.dev/maintenance-reason: "Sustained runtime I/O stalls prevent Longhorn engine startup; reduce load and verify storage before uncordoning."
 spec:
   unschedulable: true
+---
+apiVersion: v1
+kind: Node
+metadata:
+  name: titan-12
+  labels:
+    hardware: rpi4
+    node-role.kubernetes.io/worker: "true"
+    longhorn-host: "true"
+  annotations:
+    kustomize.toolkit.fluxcd.io/ssa: Merge
+    kustomize.toolkit.fluxcd.io/prune: disabled
+    atlas.bstein.dev/maintenance-reason: "SD-backed runtime stalls caused correlated probe failures; verify loaded I/O before new placement."
+spec:
+  unschedulable: true