This portable PC has an HDD storage medium, which is the most frequently found storage medium on notebook PCs of this type and age. 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.
It may also be worth considering one of the other portable PCs that have an HDD storage media currently available including cheaper portable PCs such as the X550CA, or the X552CL (£465.95) both from Asus.
Laptops with a better storage medium that might also be worth considering include the Fujitsu LifeBook A544 (SSD).