The EliteBook 745 has a better storage medium than most many processor cores laptops that are a comparable age to it. This portable PC has an SSD storage media, whereas most portable PCs that have been around for around the same time as it have an HDD storage media. 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 in fact the best storage medium across all many processor cores laptops that have been available for more than two years.
The worst storage medium across comparable types of notebook PC is HDD.