Toshiba MG03ACA400 Internals
The Toshiba MG03ACA400 comes in a standard 3.5" form factor.
Removing the PCB reveals the blue foam padding used to help absorb vibration in multi-drive deployments. The drive and motor controllers have a thermal pad to help shed heat into the case of the HDD.
The ESMT chip is a 64MB DDR2 component for caching. There is also a chip to control the drive motor, and a Marvell drive controller.
A standard 6Gb/s connection allows for wide deployment into a number of use-cases.