diff --git a/apps/base/logging/vlcluster.yaml b/apps/base/logging/vlcluster.yaml
index fc3e88f..a8f1eaf 100644
--- a/apps/base/logging/vlcluster.yaml
+++ b/apps/base/logging/vlcluster.yaml
@@ -26,18 +26,17 @@ spec:
   vlstorage:
     replicaCount: 3
     retentionPeriod: 180d
-    # 3x250Gi is ~75% of the 180d estimate: the per-node disk cap drops the
-    # oldest data instead of filling the PVC, trading tail retention for Ceph.
-    retentionMaxDiskSpaceUsageBytes: 220GiB
+    # ~7 GiB/day measured; 440GiB/node cap keeps 180d time-based, not disk-bound
+    retentionMaxDiskSpaceUsageBytes: 440GiB
     storage:
       volumeClaimTemplate:
         spec:
           accessModes:
             - ReadWriteOnce
-          storageClassName: cephrbd-fast-delete
+          storageClassName: cephrbd-fast-retain
           resources:
             requests:
-              storage: 250Gi
+              storage: 500Gi
     resources:
       requests:
         cpu: "1"