Cold data

Short description: Computer data that is rarely accessed

In computer storage, 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.[1]

## Uses

To optimize storage costs, cold data can be stored on lower performing and less expensive storage media.[2] For example, solid state disks may be used for storing hot data, while cold data can be moved to hard drives, optical discs, tapes, or migrated to cloud storage.[3][4]

## See also

* Cache (computing) - Additional storage that enables faster access to main storage
* Hierarchical storage management - Data storage technique
* Sneakernet

## References

1. ↑ Cai, Zhipeng; Wang, Chaokun; Cheng, Siyao; Wang, Hongzhi; Gao, Hong (18 June 2014) (in en). Wireless Algorithms, Systems, and Applications: 9th International Conference, WASA 2014, Harbin, China, June 23-25, 2014, Proceedings. Springer. ISBN 978-3-319-07782-6. https://books.google.com/books?id=mdQlBAAAQBAJ&dq="cold+data"+"hot+data"&pg=PA14.
2. ↑ Abbasi, Asif (20 November 2020) (in en). AWS Certified Data Analytics Study Guide: Specialty (DAS-C01) Exam. John Wiley & Sons. ISBN 978-1-119-64944-1. https://books.google.com/books?id=yKcKEAAAQBAJ&dq="cold+data"+"hot+data"&pg=PA12.
3. ↑ Cold Data, Techopedia
4. ↑ Cold Cloud Data Storage, Enterprise Storage Forum

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