The Samsung ATIV Book 9 has an SSD storage medium which is better than most portable PCs of this type and age. Most laptops of a comparable age and type 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.
This laptop's storage medium (SSD) is in fact the best storage medium amongst all notebook PCs of this age and spec.
The worst storage medium across similar types of laptop is HDD.
If the storage medium of this medium processor core notebook PC is not good enough for you then you might also want to consider the DELL Latitude 12 E7250 (SSD).