The Yoga 2 11 has an HDD storage medium which is better than the SSD storage medium found on most comparable spec notebook PCs that have been around for a similar time 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 across all 2 in 1 laptops that are a comparable age to the Yoga 2 11.
Across comparable types of laptop the best storage medium is SSD.
If the storage medium of this laptop is not good enough for you then you might also want to consider the Lenovo Yoga (SSD), or the HP Pavilion x360 (£382.66) (SSD).