The DELL Latitude 14 E7440 has an SSD storage medium which is better than the HDD storage medium found on most medium processor core notebook PCs that have been available for a comparable time to it. 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 in fact the best storage medium amongst all laptops of this spec and age.
An HDD storage medium is the worst storage medium across similar types of notebook PC.
If you are looking for a portable PC with a better storage medium then you might want to consider the T420s[pl_48433_price] (SSD), or the S540[pl_2433540_price] (SSD) both from Lenovo.