The EeeBook X205TA has a better storage medium than most similar spec portable PCs that have been available for a comparable time to it. This Asus 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.
This notebook PC's storage medium (SSD) is in fact the best storage medium across all portable PCs of this age and spec.
The worst storage medium amongst similar types of notebook PC is HDD.