The storage speed of this PC is HDD, which is typical of many similar spec desktop computers that are a comparable 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.
Alternative HDD PCs currently available which you might want to consider include the Asus VM62N (£510.73), or the Zotac Zotac which has better reviews.
Personal computers with a faster storage speed that might be worth considering include the Chromebox (£134.29) (SSD), the CN60 (£134.29) (SSD), or the GR8 (SSD) all from Asus which is also higher rated.