The SlateBook 14-p010nr has an SSD storage medium which is better than the HDD storage medium found on most notebook PCs of a similar age and type to it. Flash drives store data in semiconductors on a circuit board rather than using magnetic or optical media. Flash 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 a comparable age and spec to the SlateBook 14-p010nr.
Amongst similar types of laptop the worst storage medium is HDD.