The Lenovo ThinkPad X1 Carbon has a better storage medium than most medium processor core laptops that were released around the same time as it. This portable PC has an SSD storage medium, whereas most medium processor core laptops that have been around for around the same time as 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.
This laptop's storage medium (SSD) is actually the best storage medium amongst all medium processor core laptops that are a similar age to the ThinkPad X1 Carbon.
The worst storage medium amongst comparable types of laptop is HDD.
We compared this portable PC to all the other portable PCs that have an SSD storage media and we think cheaper laptops such as the T450, and the T550 both from Lenovo or the Toshiba Portégé Z30-A is also worth considering.
If the storage medium of this Lenovo portable PC is not good enough for you then you might also want to consider the Toshiba Tecra Z50 (SSD).