Many of the PC’s suppled by http://pc-tec.co.uk/ come installed with a 1TB SATA Hard Drive.
So what does SATA mean?:
Serial ATA (SATA, abbreviated from Serial AT Attachment) is a computer bus interface that connects host bus adapters to mass storage devices such as hard disk drives, optical drives, and solid-state drives.
The computer bus system means fast transfer of data between CPU, Optical Device, Solid State or Other memory.