The storage speed of this desktop computer is SSD, which is typical of many many processor core PCs that have been around for a comparable time to it. Solid State Drives (SSD) store information in transistors on a circuit board rather than on optical or magnetic media. This has the advantage of being much faster than a traditional HDD drive.
It may also be worth considering one of the other SSD personal computers currently available including cheaper computers such as the HP Z440 (£2,514.00).
If the storage speed of this computer is not fast enough for you then you might want to look at the Apple Mac Pro (£2,700.91) (Flash and cheaper).