The Asus VM42 has an SSD storage medium which is faster than the HDD storage medium found on most desktop computers of a comparable age and spec 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.
This desktop computer's storage speed (SSD) is actually the best storage speed amongst all similar spec personal computers that came out around the same time as the VM42.
The worst storage speed amongst similar types of desktop computer is HDD.
There are a number of alternative SSD PCs currently available which you might also want to look at including the Chromebox2 G008U, or the UN42 (£149.99) both from Asus or the HP Chromebox CB1 which has better reviews.