The storage speed of this PC is HDD, which is typical of many medium processor core PCs that came out around the same time as 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 not fast enough for you then you might also want to look at the HP 400 G3 SFF (SSD).