The Panasonic Toughbook CF-54 has an SSD storage medium which is better than most medium processor core notebook PCs that were released around the same time as it. Most similar spec notebook PCs that were released one year 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 actually the best storage medium amongst all medium processor core notebook PCs that came out around the same time as the Toughbook CF-54.
An HDD storage medium is the worst storage medium across comparable types of notebook PC.