It's not a service unless you choose to configure it to be one. It doesn't clog up your PC's usage. I'm on an old, resource-poor PC with many realtime programs running, and HDS is very lightweight for me, giving me no problems."Why do I want another SERVICE CLOGGING up my PC's usage when it can't do nothing about it either way?".
The fact that you got one false alarm is a lot less important than the fact that I and many others have gotten accurate warnings that a hard drive was in serious trouble which we wouldn't have known about otherwise. I have been running it for years now without false alarms.I done some testing and had conflicting reports. It said an external hard drive of mine was about to crash, but the problem I have with that report is after I ran a complete scan with Windows and other tools it said it was fine. S
I have not attempted to use it to fix anything, so I can't address that. Maybe somebody else can.