Editing RAM drive (section)

{{Short description|RAM used to emulate secondary storage}}
{{About|virtual drives emulated with software|hardware storage devices using RAM|solid-state drive|filesystems without drive emulation|tmpfs}}

A '''RAM drive''' (also called a '''RAM disk''') is a block of [[random-access memory]] ([[primary storage]] or [[volatile memory]]) that a computer's software is treating as if the memory were a [[disk drive]] ([[secondary storage]]). RAM drives provide high-performance temporary storage for demanding tasks and protect non-volatile storage devices from wearing down, since RAM is not prone to wear from writing, unlike non-volatile [[flash memory]].

It is sometimes referred to as a '''virtual RAM drive''' or '''software RAM drive''' to distinguish it from a hardware RAM drive that uses separate hardware containing RAM, which is a type of battery-backed [[solid-state drive]].

Historically primary storage based [[mass storage]] devices were conceived to bridge the performance gap between internal memory and secondary storage devices. In the advent of solid-state devices this advantage lost most of its appeal. However, solid-state devices do suffer from wear from frequent writing.  Primary memory writes do not so or in far lesser effect. So RAM devices do offer an advantage to store frequently changing data, like temporary or cached information.