The ATIV Book 9 has a better storage medium than most comparable spec notebook PCs that have been on the market for a similar time to it. This Samsung laptop has an SSD storage medium, whereas most comparable spec notebook PCs that were launched around the same time as 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.
This portable PC's storage medium (SSD) is in fact the best storage medium across all similar spec portable PCs that have been on the market for around the same time as the ATIV Book 9.
An HDD storage medium is the worst storage medium across similar types of portable PC.
It may also be worth also looking at one of the alternative portable PCs that have an SSD storage media currently available including the Chromebook 11 2955u, or the Chromebook 11 2955u both from DELL which has better reviews.