Perhaps a larger blue heat dissipation sticker comes on the 500GB, 1TB, and 2TB ... safe in the long run. Western Digital does add that the drive utilizes its own nCache 4.0 technology, mentioning ...

Western Digital is set to introduce its first hard drives featuring heat-assisted magnetic ... will enable the industry to achieve areal densities of 4 Tb/inch^2 or possibly even 6 Tb/inch^2.