About that Western Digital 80GB HDD that is failing (and has been cloned & replaced)...If you look at the lower left of my first pic you'll see "Power On Time: 36655"...That's total hours on that drive...Equivalent to 4 1/2 years of constant running...Since I shut down at night and when I was at work, it is about 12 1/2 years old...
That's about right. I bought it around 2005/6.
Pretty good run for a HDD.
...And it still works. Just keeps re-allocating sectors...It'll run out of unused sectors eventually and then it will get really wonky... 