The Aspire SW5 has an HDD storage medium which is better than the SSD storage medium found on most notebook PCs of a similar spec and age 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.
An HDD storage medium is in fact the worst storage medium across all notebook PCs that were launched more than a year ago.
An SSD storage medium is the best storage medium across comparable types of portable PC.