The Toshiba Z930 has an SSD storage medium which is better than most medium processor core notebook PCs that have been around for a similar time to it. Most similar spec laptops 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.
This laptop's storage medium (SSD) is in fact the best storage medium amongst all notebook PCs of a similar age and type to the Z930.
An HDD storage medium is the worst storage medium across comparable types of laptop.
If the storage medium of this Toshiba laptop is too bad for you then you might want to consider the T420s (£1,388.87) (SSD), or the S540 (SSD) both from Lenovo.