I thought members might be interested in the internal photos of this WD NAS. As the author of the article says:
"Don't start cleaning the area around your external network-attached storage (NAS) drive when it's backing up. Odds are that you're going to smack it. I did, and so a perfectly functioning 1-Tbyte drive, with my whole life stored on it, almost became a perfectly functioning doorstop."
http://www.edn.com/design/consumer/4412821/Teardown--Disposable-1-Tbyte-NAS-drives--How-d-that-happen-