Common default options for explicitly monitored (listed in services.smartd.devices) devices.
The default value turns on monitoring of all the things (see man 5 smartd.conf).
The example also turns on SMART Automatic Offline Testing on startup, and schedules short self-tests daily, and long self-tests weekly.
Declarations
Type
strings concatenated with " "Default
"-a"Example
"-a -o on -s (S/../.././02|L/../../7/04)"