The original drive lasted about 4 years, first replacement about 10 months and the second replacement less than 2 months.This is in my part time spare machine, use it 1 or 2 times a week. Now, I have a warranty replacement from Seagate, so I can replace the bad drive with the warranty replacement, send the bad drive back to Seagate and get another spare drive. It is easy to psychically replace the drive, but restoring the software takes days, about 5 years of Microsoft updates!
What's great about it: The great thing about it is I know how to replace because i have done it 2 times.
What's not so great: One replacement lasted 10 months, the next less than 2 months.