[H] Smart Drive warning

[Winterlight]

I have a Seagate 1TB drive. It is actually a replacement drive for 
the original one that failed under warranty a  quite a few years 
back. I got a windows warning confirmed when I rebooted and had a 
smart drive warning. I had never had a Smart Drive warning before. I 
backed everything up off the drive and downloaded and am running 
Seagate Tools. Seagate Tools confirmed the Smart Drive failure and is 
running a long test in an attempt to "fix" the drive. Can it fix the 
drive reliably or is this drive toast no matter what Seagate reports. 
Seems to me either way I could never trust this drive again. Maybe it 
is time to add another 3TB WD Red to my collection. thanks