The Lenovo Flex 3 11 has a better storage medium than most notebook PCs that are a comparable age to it. This portable PC has an HDD storage medium, whereas most portable PCs that were released 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 notebook PC's storage medium (HDD) is actually the worst storage medium across all portable PCs of a comparable type and age to the Flex 3 11.
An SSD storage medium is the best storage medium amongst similar types of notebook PC.
If you want a notebook PC with a better storage medium then you might also want to look at the HP 13-r100dx ($850.46) (Hybrid-HDD).