The Toshiba Z30t has an SSD storage medium which is better than most notebook PCs of a similar spec and age to it. Most laptops of this type and age 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 laptop's storage medium (SSD) is actually the best storage medium across all medium processor core laptops that have been available for more than a year.
The worst storage medium across similar types of laptop is HDD.
Other laptops that have an SSD storage media currently available which you might want to consider include because of it's better review score, the Toshiba Satellite Z30, the DELL Latitude 12 E7250, or the Lenovo W550s.
If the storage medium of this portable PC is not good enough for you then you might want to consider the HP EliteBook 840 ($669.80) (SSD).