The Toshiba Z30t has a better storage medium than most medium processor core notebook PCs that were launched around the same time as it. This portable PC has an SSD storage medium, whereas most similar spec portable PCs that have been available for 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 notebook PC's storage medium (SSD) is in fact the best storage medium amongst all laptops of this type and age.
The worst storage medium amongst similar types of notebook PC is HDD.