The Toshiba Satellite Z30 has a better storage medium than most medium processor core notebook PCs that have been around for a comparable time to it. This laptop has an SSD storage medium, whereas most laptops of a similar age and spec to 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 actually the best storage medium amongst all similar spec notebook PCs that have been on the market for more than two years.
An HDD storage medium is the worst storage medium across similar types of notebook PC.
If you want a laptop with a better storage medium then you might also want to look at the T420s (£972.00) (SSD), or the S540 (SSD) both from Lenovo.