The OMEN 15 has an SSD storage medium which is better than most notebook PCs that have been available for more than a year. Most laptops of a similar age and spec 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 notebook PC's storage medium (SSD) is in fact the best storage medium across all laptops of this spec and age.
An HDD storage medium is the worst storage medium across similar types of notebook PC.