The Toshiba CL15T has a better storage medium than most comparable spec laptops that are a similar age to it. This notebook PC has an SSD storage medium, whereas most similar spec laptops that were released around the same time as it have an HDD storage medium. Solid State Drives (SSD) store data in semiconductors on a circuit board rather than using magnetic or optical media. Solid State Drives have no moving parts which makes them very fast and reliable.
This portable PC's storage medium (SSD) is in fact the best storage medium across all laptops of a comparable age and spec to the CL15T.
Across comparable types of portable PC the worst storage medium is HDD.