The Pavilion x360 has a better storage medium than most comparable spec portable PCs that came out around the same time as it. This HP portable PC has an HDD storage medium, whereas most 2 in 1 laptops that came out around the same time as it have an SSD storage medium. 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 in fact the worst storage medium amongst all notebook PCs of this type and age.
An SSD storage medium is the best storage medium across comparable types of laptop.
If you are looking for a portable PC with a better storage medium then you might also want to look at the Lenovo Yoga (SSD), or the HP Pavilion x360 (£382.66) (SSD).