Pros: Good price (got them on sale), the one that I have running works fine. The RMA process is well-designed and easy to use. :-(

Cons: 2 out of 4 were DOA

Overall Review: I bought a total of 4 of these in two lots of two when they went on sale. They are for 4-bay NAS which had some several-year-olde Seagates that were getting old enough that they were slowly starting to fail. The NAS was starting to fill so I decided to populate the remaining slot. The NAS, after initializing it for a while, reported that the disk was bad. A second one, on the other hand, has been working fine for a couple of weeks now - no reported problems at all. I then decided to test the remaining 3 disks by doing some basic formatting on testing using a USB adapter connected to a Mac. The disk that the NAS couldn't initialize failed immediately, with a report of something like "can't access last block". A second one kept going on and off line. The third seemed to be fine - I tried things like formatting with different numbers of partitions, checking both the partition info and the file systems, and so on. Hardly a complete test, but I don't have anything on hand, and for a 2TB disk, it would take a *long* time. I've RMA'd the two failing disks; we'll see how the replacements do. The disks have different full product numbers and different expiration dates for their warrantees - two disks each for full id and date - which I'm assuming correspond to my two different purchases. It looks as if I have one DOA disk from each "lot", which argues against either a bad lot or some kind of shipping problem (though both shipments came very well packed). I don't think anecdotal reports about experience with individual drive makers says much - there's too much variation. Still, I've bought maybe 20 raw disks from various makers over the years, and this is the first time I've received DOA disks. The RMA process on WD's web site is well designed, easy to use, and works well in general. You do have to pay shipping one way - it came to something over $20 for two drives in my case; I used UPS ground - which some might object to. (At the sale prices I paid, shipping the things back cost be 10% of what I paid for the two drives to begin with!)