The Toshiba Z30 has an SSD storage medium which is better than most laptops that were launched more than a year ago. Most similar spec laptops 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.
An SSD storage medium is in fact the best storage medium amongst all similar spec portable PCs that have been around for around the same time as the Z30.
An HDD storage medium is the worst storage medium amongst similar types of notebook PC.
We compared all the other notebook PCs that have an SSD storage media to this portable PC and we think the EliteBook 850 G2, the EliteBook 840, and the EliteBook 850 G2 all from HP which is cheaper is also worth considering.
Portable PCs with a better storage medium that might also be worth considering include the Toshiba Tecra Z50 (SSD).