The Transformer Book T300 Chi has an SSD storage medium which is better than most notebook PCs that were released more than two years ago. Most medium processor core notebook PCs that have been on the market for a similar time 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.
An SSD storage medium is actually the best storage medium across all portable PCs of this age and spec.
An HDD storage medium is the worst storage medium across similar types of notebook PC.
If you want a portable PC with a better storage medium then you might want to consider the T420s[pl_48433_price] (SSD), or the X1 Carbon[pl_2432329_price] (SSD) both from Lenovo.