The Lenovo Flex 2 has an HDD storage media which is better than most similar spec notebook PCs that have been around for more than two years. Most notebook PCs of this type and age 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 portable PC's storage medium (HDD) is actually the worst storage medium amongst all 2 in 1 laptops that came out more than two years ago.
An SSD storage media is the best storage medium across similar types of portable PC.