The Portégé Z30-A has a better storage medium than most medium processor core laptops that were launched more than a year ago. This portable PC has an SSD storage medium, whereas most medium processor core laptops that are a comparable age to 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 in fact the best storage medium across all comparable spec portable PCs that were released around the same time as the Portégé Z30-A.
Across comparable types of notebook PC the worst storage medium is HDD.
If you want a notebook PC with a better storage medium then you might also want to consider the DELL Latitude 12 E7250 (SSD).