diff --git a/check_synology.py b/check_synology.py
index 4e11dce..4dbab99 100755
--- a/check_synology.py
+++ b/check_synology.py
@@ -53,6 +53,28 @@ def check_failed(value: str):
     return output.lower(), int(value), exit_code
 
 
+def check_disk_status(value: str):
+    if value == '1':
+        exit_code = nagios.STATE_OK
+        output = 'Normal'
+    elif value == '2':
+        exit_code = nagios.STATE_WARN
+        output = 'Initialized'
+    elif value == '3':
+        exit_code = nagios.STATE_WARN
+        output = 'Not Initialized'
+    elif value == '4':
+        exit_code = nagios.STATE_CRIT
+        output = 'System Partition Failed'
+    elif value == '5':
+        exit_code = nagios.STATE_CRIT
+        output = 'Crashed'
+    else:
+        exit_code = nagios.STATE_UNKNOWN
+        output = 'Unknown status replied'
+    return output.lower(), int(value), exit_code
+
+
 def query_snmp(host, community, oid: str):
     error_indication, error_status, error_index, var_binds = next(
         getCmd(SnmpEngine(),
@@ -204,7 +226,7 @@ def main(args):
         perfdata_dict = {}
         exit_code = nagios.STATE_OK
         for disk, data in enumerate(disk_data):
-            output, value, d_exit_code = check_failed(data[4])
+            output, value, d_exit_code = check_disk_status(data[4])
             exit_code = d_exit_code
             result_str = result_str + f'Disk {disk + 1}: {output}'
             perfdata_dict[f'disk_{disk + 1}_status'] = {