The Toshiba Satellite W30Dt has an HDD storage medium which is better than most comparable spec portable PCs that have been on the market for a similar time to it. Most laptops that came out around the same time as 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.
An HDD storage medium is actually the worst storage medium across all comparable spec portable PCs that have been around for around the same time as the Satellite W30Dt.
Across similar types of portable PC the best storage medium is SSD.
Notebook PCs with a better storage medium that might be worth considering include the Lenovo Yoga (SSD), or the HP Pavilion x360 (£382.66) (SSD).