# What is SSD Caching?

It is the process of increasing the overall response time of the computer by keeping frequently used data on fast SSD disks.

## Overview
The main storage units of computers can sometimes be slow. This method temporarily stores the most needed files or data on SSD, which is much faster. Thus, the system pulls the data it is looking for directly from the SSD instead of searching for it on the slow disk.

*Analogy: It's like putting the books you read a lot on the shelf right above your desk, instead of putting them on the farthest shelf of the library.*

## How it works
The system automatically copies this data to the SSD through software that keeps track of which data is used frequently. When you open a file, the system first looks at the SSD.

## Where it is used
It is used in servers, high-performance computers and NAS devices.

## Commonly confused with
It may be confused with just adding storage, but this is a speed-up strategy.

## Frequently asked questions
**Does it reduce the lifespan of SSD?**
Yes, when doing continuous writes, but modern systems optimize for this.

**Is it adjusted manually?**
Usually the operating system or special drivers manage this automatically.


## Related terms
- [Caching](/en/dictionary/caching/)
- [NAS](/en/dictionary/nas/)
- [RAM](/en/dictionary/ram/)

## Related tools
- [Omlx](/en/discover/omlx/)

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Source: TreScout Dictionary · https://trescout.com/en/dictionary/ssd-caching/