siguardian lite is the tool what allows you to control health of your hard drives and prevent data loss of failures. using s.m.a.r.t. technology included in all modern drives siguardian lite estimate end date of hard drive lifetime, so you can make backup copy of all data. s.m.a.r.t. stands for self-monitoring, analysis and reporting technology. every time the hard-drive is started, it performs a self-checkup and records a certain value for each of its attributes (properties). the values range between 0 (non-functioning) to 250 (excellent condition). the average value for most attributes is 100. when the safety threshold is crossed (20 for most attributes), it means that a hard-drive is unstable and you should back up your data. siguardian lite combine power of modern technologies with easy-to-use interface and intended for beginners and home users. protect your hard drive for cost only $15!