Summary: So RMA'd this with less than 2 months for the warranty remaining. Spent $10 to ship the failed unit to California from New York..... AND Western Digital sent me a BRAND NEW (manufactured FEB 2013) replacement.
Pros: used in a 24x7 box and worked great for 34 continuous months of moderate use.
Cons: drive motor failed. In warranty (see other thoughts).
Summary: I have been using these in a 4 hard drive RAID 10 Array for a number of years and had one HD failure in that time. Recent got an HD failure warning and, even though rebuilding the array fixed the problem, I bought this latest drive as a backup for when needed.
Pros: Cheap, quiet, and no issues on the whole. I have used nothing but Western Digital drives for many years and can find little the fault them on.
Cons: Not sure if this is a con or not as I am not sure how long these should last. I have owned 5 of these drives for 4+ years and have had one failure in that time. Is that a good record or bad???
Summary: A drop (case tipped over) with the power on destroyed the drive. Data was ok, but the drive has nothing but errors and bad sectors. This is my third purchase. Would buy again, I do not need a hundred million GB's.
Pros: Cheapest Sata 3.0Gb/s hd with 16mb cache on newegg :) Highly rated too.
Cons: Only 250GB. Not a bleeding edge performance drive.
Summary: Solid drives, with WD reliability. How is it every other brand I've ever tried (Samsung, Maxtor, IBM, Hitachi) has had problems, but never any of my WD drives? Even my original (first gen) 10,000 RPM raptors are spinning away.
Pros: I've been using two of these in a RAID 0 array for over two years and they've worked great.
Cons: Plastic connector for the SATA cable broke pretty easily. I've had my SATA cable taped with electrical tape onto the pins for over a year now.