The Asus R556LA has a better storage medium than most medium processor core notebook PCs that have been around for around the same time as it. This notebook PC has an SSD storage medium, whereas most comparable spec portable PCs that have been available for around the same time as it have an HDD storage medium. Solid State Drives (SSD) store data in semiconductors on a circuit board rather than using magnetic or optical media. Solid State Drives have no moving parts which makes them very fast and reliable.
This notebook PC's storage medium (SSD) is actually the best storage medium amongst all notebook PCs of this type and age.
The worst storage medium across similar types of notebook PC is HDD.
If the storage medium of this Asus notebook PC is too bad for you then you might want to look at the Elitebook 820 G2 (£750.00) (SSD), or the EliteBook 820 G2 (£778.63) (SSD) both from HP.