External USB harddisk

• Buffalo DriveStation 2.0TB USB 3.0 (Seagate Barracuda 2000DM001 7200RPM)
• Samsung Station D3 2.0TB USB 3.0 (Samsung Spinpoint F3 HD203WI 5400RPM)
• Samsung Station D3 3.0TB USB 3.0 (Seagate Barracuda 3000DM001 7200RPM)
• WD Elements 2TB (WD Green WD20EARS 5400RPM, seems high fault rate)