This notebook PC has an HDD storage medium, which is typical of many portable PCs of this age and type. 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.
There are a number of alternative notebook PCs that have an HDD storage media currently available that you might also want to look at including because of it's better review score, the Lenovo B50[plb_2478103_price].
If the storage medium of this DELL laptop is not good enough for you then you might also want to consider the HP EliteBook 840 G1[plb_1620817_price] (SSD) which is also cheaper.