A solid-state drive is considerably faster than any regular hard-disk drive. This is because an HDD employs spinning disks, that can rotate only so fast and the more information is read and written, the sluggish and warmer they become, whereas an SDD employs modules of flash memory, so there are no actually moving components. The access speeds for an SSD are drastically higher, which makes this sort of drives the best solution every time speed is needed. This is the reason why SSDs are in many cases used for the Operating System on a laptop or computer and for keeping data which is used repeatedly on hosting servers. Numerous providers also use a combination of the two drives, so they store the data on HDDs, but they use one or more solid-state drives to cache the more often used data and because of that, the data loads faster while the load on the HDDs is reduced because their disks have to spin less frequently to read and write.