The Stream 13-c029nl has a better storage medium than most notebook PCs that came out around the same time as it. This portable PC has an SSD storage medium, whereas most medium processor core laptops that were released one year ago 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.
An SSD storage medium is in fact the best storage medium across all comparable spec notebook PCs that have been available for more than a year.
Across similar types of laptop the worst storage medium is HDD.