The storage speed of this computer is HDD, which is typical of many desktop computers of a comparable spec and age to it. A Hard Disk Drive (HDD) is the traditional storage method for computers. A HDD stores the information on magnetic disks. HDD drives are cheap, but they are slower than Flash and SSD bases storage systems.
It may also be worth also looking at one of the alternative HDD desktop computers currently available including the Asus M32AD[plb_2538324_price], or the HP ProDesk 600[plb_2531849_price] which is cheaper.