The Flex 10 has an HDD storage media which is better than most 2 in 1 laptops that have been on the market for a comparable time to it. Most notebook PCs that are a comparable age to it have an SSD storage media. 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 laptops of this age and spec.
Across comparable types of notebook PC the best storage medium is SSD.
If the storage medium of this notebook PC is too bad for you then you might want to look at the Toshiba U920t (SSD and higher rated).