The Flex 10 has an HDD storage medium which is better than most portable PCs of a comparable type and age to it. Most notebook PCs that have been on the market for around the same time as it have an SSD storage medium. HDD is a traditional storage drive which stores the information on magnetic disks. HDD drives are slower than other forms of storage such as solid state drives (SSD) and flash drives.
This laptop's storage medium (HDD) is in fact the worst storage medium amongst all laptops of a similar age and type to the Flex 10.
Amongst similar types of laptop the best storage medium is SSD.
If you are looking for a notebook PC with a better storage medium then you might want to look at the HP 13-r100dx ($850.46) (Hybrid-HDD).