The Flex 14 has an HDD storage medium which is better than the SSD storage medium found on most laptops of a similar spec 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.
This laptop's storage medium (HDD) is in fact the worst storage medium amongst all notebook PCs of this age and spec.
The best storage medium amongst comparable types of laptop is SSD.
We think you might also be interested in some of the alternative laptops that have an HDD storage media currently available including because of it's better review score, the Lenovo Yoga.
If the storage medium of this notebook PC is not good enough for you then you might want to look at the Satellite U920t (SSD and cheaper), or the U920t (SSD and cheaper) both from Toshiba.