--- smartmontools/smartd.conf
+++ smartmontools/smartd.conf
@@ -20,7 +20,12 @@
 # Directives listed below, which will be applied to all devices that
 # are found.  Most users should comment out DEVICESCAN and explicitly
 # list the devices that they wish to monitor.
-DEVICESCAN
+#DEVICESCAN
+
+# Alternative setting to check the SMART health status of disks,
+# send warning emails to root, check devices unless they are in SLEEP
+# or STANDBY mode, with maximum number of skipped checks set to 12 hours.
+DEVICESCAN -H -m root -n standby,24,q
 
 # Alternative setting to ignore temperature and power-on hours reports
 # in syslog.