SMC Networks SMCNAS04 - Manual (Page 57)

48
Alerts
Allow you to set up the storage system to notify up to two people via email if
any problem occurs namely, when hard disk space usage have reached one
limitation of total capacity, when the upper operating temperature has been
reached, and when power level of the USB-UPS is not adequate .
To have a good use of this feature, you must have to access an SMTP email
server, either within your own network or through an Internet service provider.