Summary: I thought at first glance this would be a fantastic deal but I'm not going to take a chance with any 3TB HD -- because there are problems supporting more than 2.19TB. http://www.pcadvisor.co.uk/reviews/pc-peripheral/3258206/western-digital-caviar-green-3tb-review/ I'll just stick to great deals on 2TB drives, easier.
Pros: Seems like a great dead...
Cons: ...but if you are running Windows be prepared for issues.
Summary: I tried connecting this to the Intel ICH10 controller on my mobo. BIOS shows it as a 801.6GB. Why? Don't know. I have a few other WD 2TB Green drives connected to the same controller, and they are all recognized just fine, so I expected that this one will also be seen as at least a 2TB drive. But no, it only shows as 801.6GB Will return it and get a 2TB drive instead.
Pros: Looks nice.
Cons: Didn't work for me., BIOS sees it as a 801.6GB HDD., Win Vista x64 Disk Management shows only 746GB.
Summary: Overall I've been very happy with this as a storage drive. Works flawlessly in a Vantec Nexstar CX USB3 enclosure. Will update review if things change. edit: 3 month update. Drive has NUMEROUS problems, drops out of windows, MFT errors, incorrect capacity reporting.
Pros: Quiet, Massive storage for a decent price (post-flood pricing)
Cons: 2 Year Warranty, Head parks every ~8 seconds
Summary: I own 6 of these, all internal drives and four of them in a WHS, the other two in an office desktop. I've had two and as of this week, three replaced through WD RMA process. They never run hotter than 37 degrees C but still they start having data inconsistencies or damaged sectors after 1 to 2 years of use. The last one held up for approx 450 days and then the data inconsistencies started resulting in windows prompting me to replace the hard drive asap.
Pros: Quiet, cool, lot's of storage space and when I bought, cheap! (before the flooding in Thailand)
Summary: Purchased this drive about an year ago and it failed on me. Windows would stop recognizing it, I scanned the drive and it detected bad sectors. Have sinced RMA'd it and WD sent me a new one. I used to be a big supporter of WD hard drives. Now not so much. I would give this product a single star out of 5 but I forgot my OrderID.