This dirty disk was pulled from a JBOD that was screaming for attention. Screaming both literally and figuratively. The fan was screeching and the drives were getting warm.
This drive housing had been living in an office environment, over about four years carpet fluff had migrated via the airflow to the drive box.
All electronics with a fan will accumulate fluff in a carpeted environment. Be sure to check out the inside and back grills of your media servers especially Xboxes, Tivo and PlayStations once in a while before overheating smokes out the place.
If you want more DirtyPictures ( of the PC type of course ) check out The Register special feature.