Encyclopedia of Database Systems

2018 Edition
| Editors: Ling Liu, M. Tamer Özsu

Continuous Data Protection

  • Kazuhisa Fujimoto
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-8265-9_1465

Synonyms

CDP; Continuous backup

Definition

CDP is a data protection service capturing data changes to storage, often providing the capability of restoring any point in time copies.

Key Points

CDP differs from usual backups in that users do not need to specify the point in time until they recover data from backups. From an application point of view, every time when it updates data in an original volume, CDP keeps updates. In case of recovery, when users specify the point in time, CDP creates the point in time copy from an original volume and updates.

In several CDP implementations, users can specify the granularities of restorable objects which help them to specify the point in time easily. For example, restorable objects range from crash-consistent images to logical objects such as files, mail boxes, messages, database files, or logs.

Cross-References

Recommended Reading

  1. 1.
    Laden G, et al. Architectures for controller based CDP. In: Proceedings of the 5th USENIX Conference on File and Storage Technologies; 2007. p. 107–21.Google Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Hitachi Ltd.TokyoJapan

Section editors and affiliations

  • Masaru Kitsuregawa
    • 1
  1. 1.Inst. of Industrial ScienceUniv. of TokyoTokyoJapan