Hi! I have seen all your offered product and I want to know if I'm gonna install auto-CAD Civil 3D what would be the required hard drive? If there is.
please have a look first at <http://usa.autodesk.com/civil-3d/system-requiremen
Ponited to your question should the hdd matching to the tech specs given by the link above.
It sould be also matching to the rest of your system/hardware to skirt around a bottleneck.
Western Digital Velicraptor. SATA 6.