Hey there again, greatfox56!
I'd still advise you to keep regular backups of your files stored somewhere else as well and make sure you monitor the HDD's behavior every once in a while, even if it passes the tests from the brand-specific utility. Did you run both - the short and the long tests from the manufacturer's HDD tool, though?
As I already mentioned, you should keep your gameplay saves and software backed up somewhere else, if this data is important to you. Otherwise, you risk corrupting the files, in case the HDD's SMART raw values increase.
Best of luck!
SuperSoph_WD