The Lenovo T540p has an SSD storage medium which is better than most laptops of this age and type. Most 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.
An SSD storage medium is actually the best storage medium across all comparable spec notebook PCs that came out more than two years ago.
The worst storage medium across similar types of laptop is HDD.
If the storage medium of this portable PC is not good enough for you then you might want to consider the T420s[pl_48433_price] (SSD), or the S540[pl_2433540_price] (SSD) both from Lenovo.