The storage speed of this PC is HDD, which is the most commonly found storage medium on desktop computers of a comparable spec and age to it. A Hard Disk Drive (HDD) is the traditional storage method for computers. A HDD stores the information on magnetic disks. HDD drives are cheap, but they are slower than Flash and SSD bases storage systems.
If the storage speed of this desktop computer is too slow for you then you might also want to look at the Shuttle DSA2LS (Flash).