The Pavilion x360 has an HDD storage medium which is better than the SSD storage medium found on most 2 in 1 laptops that have been around for a similar time to it. HDD is a traditional storage drive which stores the information on magnetic disks. HDD drives are slower than other forms of storage such as solid state drives (SSD) and flash drives.
An HDD storage medium is actually the worst storage medium amongst all laptops of this age and spec.
An SSD storage medium is the best storage medium amongst comparable types of laptop.
If you want a portable PC with a better storage medium then you might want to consider the Lenovo Yoga (SSD), or the HP Pavilion x360 (SSD).