The ProBook 430 has an SSD storage medium which is better than the HDD storage medium found on most notebook PCs of this type and age. 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 actually the best storage medium amongst all medium processor core notebook PCs that have been available for around the same time as the ProBook 430.
An HDD storage medium is the worst storage medium across similar types of notebook PC.
It may also be worth considering one of the alternative laptops that have an SSD storage media currently available including the Latitude 12 E5250[pl_2854767_price], or the Latitude 12 E5250[pl_2854767_price] both from DELL or the Toshiba Z40[plb_2984397_price] which is cheaper.
If you would prefer a portable PC with a better storage medium then you might also want to consider the LG 13Z940[plb_2362386_price] (SSD).