The Lenovo ThinkPad T440s has an SSD storage medium which is better than the HDD storage medium found on most medium processor core laptops that were released more than two years ago. 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 across all portable PCs of this type and age.
An HDD storage medium is the worst storage medium amongst comparable types of laptop.
It may also be worth also looking at one of the alternative laptops that have an SSD storage media currently available including cheaper laptops such as the Toshiba Tecra Z40[plb_2252510_price], the Lenovo L440[plb_2058989_price], or the HP ProBook 640 G1[plb_2059084_price].
Laptops with a better storage medium that might be worth looking at include the Toshiba TECRA Z40[plb_2041288_price] (SSD).