diff --git a/.env.example b/.env.example
index e255670..c4f8eaa 100644
--- a/.env.example
+++ b/.env.example
@@ -37,4 +37,5 @@ RAID_DEVICE=/dev/md127
 STORAGE_CACHE_SECONDS=900
 # Optional: SMART-Abfragen aktivieren (benötigt Zugriff auf Host-Devices)
 SMART_ENABLED=false
+HOST_SYS_PATH=/host-sys
 LOG_LEVEL=INFO
diff --git a/app.py b/app.py
index 449f7a4..f26f907 100644
--- a/app.py
+++ b/app.py
@@ -41,6 +41,7 @@ REQUEST_TIMEOUT = int(os.environ.get("REQUEST_TIMEOUT", "20"))
 DATASTORE_PATH = os.environ.get("DATASTORE_PATH", "/nesflix").rstrip("/") or "/"
 RAID_DEVICE = os.environ.get("RAID_DEVICE", "/dev/md127")
 HOST_DEVICE_PATH = os.environ.get("HOST_DEVICE_PATH", "/host-dev")
+HOST_SYS_PATH = os.environ.get("HOST_SYS_PATH", "/host-sys")
 STORAGE_CACHE_SECONDS = int(os.environ.get("STORAGE_CACHE_SECONDS", "900"))
 SMART_ENABLED = os.environ.get("SMART_ENABLED", "false").lower() in {"1", "true", "yes", "on"}
 
@@ -243,7 +244,7 @@ def _flatten_lsblk(nodes):
 def _device_serial(device):
     """Read a disk serial from sysfs when lsblk cannot expose it in Docker."""
     name = Path(device).name
-    for path in (Path("/sys/class/block") / name / "device/serial", Path("/sys/block") / name / "device/serial"):
+    for path in (Path(HOST_SYS_PATH) / "class/block" / name / "device/serial", Path(HOST_SYS_PATH) / "block" / name / "device/serial", Path("/sys/class/block") / name / "device/serial", Path("/sys/block") / name / "device/serial"):
         try:
             value = path.read_text().strip()
             if value:
@@ -357,7 +358,7 @@ def raid_status():
         if SMART_ENABLED and shutil.which("smartctl"):
             smart_device = disk["device"].replace("/dev/", f"{HOST_DEVICE_PATH.rstrip('/')}/", 1)
             smart_output, _ = _read_command(["smartctl", "-H", smart_device], timeout=6)
-            health = re.search(r"SMART overall-health self-assessment test result:\s*(.+)", smart_output)
+            health = re.search(r"(?:SMART overall-health self-assessment test result|SMART Health Status):\s*(.+)", smart_output, re.IGNORECASE)
             disk["smart"] = health.group(1).strip() if health else "Nicht verfügbar"
     missing = members_match and members_match.group(1) != members_match.group(2)
     failed = detail.get("failed_devices", 0) > 0 or any(disk["status"] == "failed" for disk in devices)
diff --git a/docker-compose.yml b/docker-compose.yml
index aaef9ca..635482d 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -7,6 +7,11 @@ services:
       - "8099:8099"
     devices:
       - "${RAID_DEVICE:-/dev/md127}:${RAID_DEVICE:-/dev/md127}"
+    cap_add:
+      - SYS_RAWIO
+    device_cgroup_rules:
+      - "b 8:* rwm"
+      - "b 9:* rwm"
     extra_hosts:
       - "host.docker.internal:host-gateway"
     env_file:
@@ -20,6 +25,8 @@ services:
       - ${DATASTORE_HOST_PATH:-/nesflix}:/nesflix:ro
       # Read-only Host-Devices für lsblk/smartctl; Media Max führt keine RAID-Schreiboperationen aus.
       - /dev:/host-dev:ro
+      # Read-only Hardware-Metadaten für Seriennummern und SMART-Zuordnung.
+      - /sys:/host-sys:ro
       - ./data:/data
     networks:
       - media