The storage speed of this PC is HDD, which is typical of many personal 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 medium processor core computer is not fast enough for you then you might want to look at the Zotac ZBOX CA320 nano (SSD and higher rated).