A solid-state drive (SSD) improves the performance of any app running on it as compared to a regular hard-disk drive (HDD). The reason is that a solid-state drive functions with multiple interconnected flash memory modules, so there're no physical parts to move. In contrast, an HDD features spinning disks and any reading or writing process causes the disks to spin, meaning the speed of an HDD is restricted. Because the cost of the two types of drives are also different, a large number of desktops and web servers are set up with an SSD for the OS and various applications, and a hard disk for file storage, in this way balancing cost and performance. A web hosting provider may also use an SSD for caching purposes, thus files which are used repeatedly will be located on this type of a drive for accomplishing better loading speeds and for reducing the reading/writing processes on the hard drives.