In
computer storage
Computer data storage is a technology consisting of computer components and recording media that are used to retain digital data. It is a core function and fundamental component of computers.
The central processing unit (CPU) of a comput ...
, cold data refers to data that is rarely accessed, therefore considered "cold". Cold data is the opposite of hot data, which is data that is frequently accessed. To optimize storage costs, cold data can be stored on lower performing and less expensive storage media. For example,
solid state disks may be used for storing hot data, while cold data can be moved to
hard drives
A hard disk drive (HDD), hard disk, hard drive, or fixed disk is an electro-mechanical data storage device that stores and retrieves digital data using magnetic storage with one or more rigid rapidly rotating platters coated with magne ...
,
optical disc
In computing and optical disc recording technologies, an optical disc (OD) is a flat, usually circular disc that encodes binary data (bits) in the form of pits and lands on a special material, often aluminum, on one of its flat surfaces. ...
s,
tapes or migrated to
cloud storage
Cloud storage is a model of computer data storage in which the digital data is stored in logical pools, said to be on "the cloud". The physical storage spans multiple servers (sometimes in multiple locations), and the physical environment is ty ...
.
Cold Cloud Data Storage
Enterprise Storage Forum
See also
* Hierarchical storage management
Hierarchical storage management (HSM), also known as Tiered storage, is a data storage and Data management technique that automatically moves data between high-cost and low-cost storage media. HSM systems exist because high-speed storage devices, ...
* Cache (computing)
* Sneakernet
Sneakernet, also called sneaker net, is an informal term for the transfer of electronic information by physically moving media such as magnetic tape, floppy disks, optical discs, USB flash drives or external hard drives between computers, rathe ...
References
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Data storage
Computer data storage