The Toshiba Tecra A50 has an SSD storage medium which is better than the HDD storage medium found on most laptops of this type and age. 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 amongst all comparable spec notebook PCs that have been around for around the same time as the Tecra A50.
Amongst similar types of laptop the worst storage medium is HDD.
If you would prefer a portable PC with a better storage medium then you might also want to look at the DELL XPS 13 (£491.96) (SSD).