The Lenovo Yoga 2 has a better storage medium than most 2 in 1 laptops that have been around for around the same time as it. This notebook PC has an HDD storage medium, whereas most portable PCs that have been on the market for a comparable time to 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 portable PC's storage medium (HDD) is in fact the worst storage medium across all laptops that have been available for around the same time as the Yoga 2.
The best storage medium across comparable types of portable PC is SSD.