The EliteBook 745 has a better storage medium than most many processor core portable PCs that are a similar age to it. This notebook PC has an SSD storage medium, whereas most many processor core portable PCs that came out 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.
This laptop's storage medium (SSD) is in fact the best storage medium amongst all many processor core portable PCs that have been on the market for a similar time to the EliteBook 745.
The worst storage medium across comparable types of laptop is HDD.
It may also be worth considering one of the alternative portable PCs that have an SSD storage media currently available including the ZBook 17, or the ZBook 17 both from HP which has better reviews; or the Gigabyte P34G v2 which is cheaper.
If the storage medium of this many processor core notebook PC is too bad for you then you might want to consider the DELL XPS 15 9530 (SSD), or the HP ZBook 15 (SSD).