diff --git a/hwmonDaemon.py b/hwmonDaemon.py
index fe0354e..f3faa3c 100644
--- a/hwmonDaemon.py
+++ b/hwmonDaemon.py
@@ -127,7 +127,9 @@ class SystemHealthMonitor:
         'PROMETHEUS_TEXTFILE_PATH': None,  # Path for textfile collector (alternative to HTTP)
         # SMART analysis thresholds
         'NEW_DRIVE_HOURS_THRESHOLD': 720,    # Hours to consider a drive "new" (~30 days)
-        'SMART_ERROR_RECENT_HOURS': 168      # Hours window for recent SMART errors (~1 week)
+        'SMART_ERROR_RECENT_HOURS': 168,     # Hours window for recent SMART errors (~1 week)
+        # Storage limits
+        'HISTORY_MAX_BYTES': 52428800         # 50MB max storage for history files
     }
 
     @classmethod
@@ -204,6 +206,11 @@ class SystemHealthMonitor:
                                 cls.CONFIG['SMART_ERROR_RECENT_HOURS'] = int(value)
                             except ValueError:
                                 logger.warning(f"Invalid SMART_ERROR_RECENT_HOURS value: {value}")
+                        elif key == 'HISTORY_MAX_BYTES':
+                            try:
+                                cls.CONFIG['HISTORY_MAX_BYTES'] = int(value)
+                            except ValueError:
+                                logger.warning(f"Invalid HISTORY_MAX_BYTES value: {value}")
 
         except Exception as e:
             logger.error(f"Failed to load .env file: {e}")
@@ -658,13 +665,15 @@ class SystemHealthMonitor:
         # Ensure history directory exists
         os.makedirs(self.CONFIG['HISTORY_DIR'], exist_ok=True)
 
-    def _enforce_storage_limit(self, history_dir: str, max_bytes: int = 10485760):
+    def _enforce_storage_limit(self, history_dir: str, max_bytes: int = None):
         """
-        Delete oldest history files if directory exceeds size limit (default 10MB).
+        Delete oldest history files if directory exceeds size limit.
 
         :param history_dir: Directory containing history files
-        :param max_bytes: Maximum directory size in bytes (default 10MB)
+        :param max_bytes: Maximum directory size in bytes (default from CONFIG)
         """
+        if max_bytes is None:
+            max_bytes = self.CONFIG.get('HISTORY_MAX_BYTES', 52428800)
         if not os.path.exists(history_dir):
             return