The Lenovo Yoga 2 has an HDD storage medium which is better than the SSD storage medium found on most notebook PCs of this spec and age. 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.
An HDD storage medium is actually the worst storage medium amongst all comparable spec notebook PCs that were released more than a year ago.
Amongst similar types of notebook PC the best storage medium is SSD.