HGST Ultrastar 7K4000 Internals
The HGST Ultrastar 7K4000 comes in a standard 3.5-inch form factor.
Removing the PCB reveals the foam pad used to dampen vibration during use. We can observe the single thermal pad used for the drive controller.
The Winbond is a 64MB DDR2 component for caching, a Smooth chip to control the drive motor, and an LSI drive controller.
The SAS 6Gb/s connection allows for a robust instruction set, dual port and failover technologies.