diff --git a/common/nfs-services-standby.nix b/common/nfs-services-standby.nix
index f241a7a..6a9894c 100644
--- a/common/nfs-services-standby.nix
+++ b/common/nfs-services-standby.nix
@@ -39,15 +39,15 @@ in
       noCheck = true;
     };
 
-    # Cleanup old snapshots on standby (keep last 48 hours for safety)
+    # Cleanup old snapshots on standby (keep last 4 hours for HA failover)
     systemd.services.cleanup-services-standby-snapshots = {
       description = "Cleanup old btrfs snapshots in services-standby";
       path = [ pkgs.btrfs-progs pkgs.findutils ];
 
       script = ''
         set -euo pipefail
-        # Keep last 48 hours of snapshots (576 snapshots at 5min intervals)
-        find /persist/services-standby -maxdepth 1 -name 'services@*' -mmin +2880 -exec btrfs subvolume delete {} \; || true
+        # Keep last 4 hours of snapshots (48 snapshots at 5min intervals)
+        find /persist/services-standby -maxdepth 1 -name 'services@*' -mmin +240 -exec btrfs subvolume delete {} \; || true
       '';
 
       serviceConfig = {