The UX305FA has a better storage medium than most portable PCs that have been on the market for a comparable time to it. This Asus notebook PC has an SSD storage medium, whereas most similar spec laptops that are a comparable age 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.
This laptop's storage medium (SSD) is in fact the best storage medium across all medium processor core notebook PCs that have been available for around the same time as the UX305FA.
Across similar types of laptop the worst storage medium is HDD.
If the storage medium of this portable PC is too bad for you then you might also want to look at the Elitebook 820 G2[pl_2886802_price] (SSD), or the EliteBook 820 G2[pl_2897415_price] (SSD) both from HP.