The EliteBook 820 has a better storage medium than most laptops that have been on the market for around the same time as it. This HP notebook PC has an SSD storage medium, whereas most similar spec portable PCs that were released more than two years ago 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 portable PC's storage medium (SSD) is actually the best storage medium across all comparable spec notebook PCs that are a similar age to the EliteBook 820.
An HDD storage medium is the worst storage medium amongst comparable types of portable PC.
Other portable PCs that have an SSD storage media currently available which you might also want to consider include cheaper notebook PCs such as the Pro[pl_1496960_price], or the Pro[pl_1496960_price] both from HP or the DELL Latitude 12 E7250[plb_2367862_price].
Notebook PCs with a better storage medium that might be worth considering include the DELL XPS 13[plb_2417241_price] (SSD).