The ProBook 6470b has a better storage medium than most medium processor core notebook PCs that were released around the same time as it. This HP portable PC has an SSD storage medium, whereas most notebook PCs of this age and spec 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 across all medium processor core notebook PCs that are a comparable age to the ProBook 6470b.
The worst storage medium across similar types of notebook PC is HDD.
Laptops with a better storage medium that might be worth looking at include the T420s[pl_48433_price] (SSD), or the S540[pl_2433540_price] (SSD) both from Lenovo.