The Acer TravelMate TMP6 has a better storage medium than most medium processor core laptops that were released around the same time as it. This laptop has an SSD storage medium, whereas most comparable spec laptops that are a similar age to 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.
An SSD storage medium is actually the best storage medium amongst all portable PCs of a similar age and type to the TravelMate TMP6.
An HDD storage medium is the worst storage medium across similar types of portable PC.
Other notebook PCs that have an SSD storage media currently available which you might also want to look at include because of it's better review score, the Fujitsu LifeBook S904, the HP ProBook 650, or the DELL Latitude 12 E7250.