The DELL XPS 13 has an SSD storage medium which is better than most notebook PCs that have been around for more than two years. Most medium processor core notebook 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 actually the best storage medium across all portable PCs of this type and age.
An HDD storage medium is the worst storage medium amongst similar types of portable PC.
Alternative portable PCs that have an SSD storage media currently available which you might want to look at include the Toshiba Satellite Z30[plb_2363540_price] which is cheaper.
If you would prefer a portable PC with a better storage medium then you might want to look at the Lenovo T420s[plb_48433_price] (SSD), or the HP EliteBook 820[plb_2697094_price] (SSD).