The ATIV Book 9 has a better storage medium than most many processor core laptops that were launched around the same time as it. This portable PC has an SSD storage medium, whereas most laptops of a comparable type and age to it have an HDD storage medium. Solid State Drives (SSD) store data in semiconductors on a circuit board rather than using magnetic or optical media. Solid State Drives have no moving parts which makes them very fast and reliable.
An SSD storage medium is actually the best storage medium amongst all similar spec laptops that came out more than a year ago.
The worst storage medium across similar types of notebook PC is HDD.