This portable PC has an HDD storage medium, which is typical of many similar spec portable PCs that have been on the market for a comparable 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.
We think you might also be interested in some of the other notebook PCs that have an HDD storage media currently available including cheaper laptops such as the Asus F551CA.
Notebook PCs with a better storage medium that might be worth looking at include the Fujitsu LifeBook A544 (SSD) which is also cheaper.