The Lenovo Flex 2 14 has an HDD storage medium which is better than the SSD storage medium found on most notebook PCs of a comparable type and age to it. 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.
An HDD storage medium is in fact the worst storage medium across all 2 in 1 laptops that were released around the same time as the Flex 2 14.
An SSD storage medium is the best storage medium amongst similar types of portable PC.
If the storage medium of this 2 in 1 laptop is too bad for you then you might want to consider the Lenovo Yoga (SSD), or the HP Pavilion x360 (£382.66) (SSD).