The Microsoft Surface Pro 3 has a better storage medium than most comparable spec portable PCs that have been available for a similar time to it. This notebook PC has an SSD storage medium, whereas most portable PCs that were released more than two years ago 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.
An SSD storage medium is in fact the best storage medium amongst all portable PCs that were launched more than two years ago.
The worst storage medium across comparable types of portable PC is HDD.