The Macbook Pro Mid 2012 has an HDD storage medium which is better than most notebook PCs of a similar spec and age to it. Most laptops of this type and age 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.
An HDD storage medium is actually the worst storage medium across all portable PCs of this type and age.
An SSD storage medium is the best storage medium across comparable types of notebook PC.