The Transformer Book T300 Chi has an SSD storage media which is better than the HDD storage media found on most medium processor cores notebook PCs that have been on the market for more than two years. 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 media is in fact the best storage medium across all notebook PCs of this age and spec.
An HDD storage media is the worst storage medium across similar types of laptop.