The Cloudbook AO1-131 has an SSD storage medium which is better than most medium processor core notebook PCs that have been on the market for more than a year. Most laptops that have been around for around the same time as it have an HDD storage medium. Flash drives store data in semiconductors on a circuit board rather than using magnetic or optical media. Flash have no moving parts which makes them very fast and reliable.
This portable PC's storage medium (SSD) is in fact the best storage medium amongst all portable PCs of this spec and age.
Amongst similar types of portable PC the worst storage medium is HDD.