The storage speed of this computer is HDD, which is the most commonly found storage medium on desktop computers of a similar age and spec 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.
If the storage speed of this medium processor core personal computer is not fast enough for you then you might want to consider the W530 (£1,035.64) (SSD), or the M740 (£1,513.20) (SSD) both from Fujitsu.