ALERT

[WEBINAR] Index Insanity: How to Avoid Database Chaos

Data Deduplication

Definition - What does Data Deduplication mean?

Data deduplication is a data compression technique in which redundant or repeated copies of data are removed from a system. It is implemented in data backup and network data mechanisms and enables the storage of one unique instance of data within a database or information system (IS).

Data deduplication is also known as intelligent compression, single instance storage, commonality factoring or data reduction.

Techopedia explains Data Deduplication

Data deduplication works by analyzing and comparing incoming data segments with previously stored data. If data is already present, data deduplication algorithms discard the new data and create a reference. For example, if a document file is backed up with changes, the previous file and applied changes are added to the data segment. However, if there is no difference, the newer data file is discarded, and a reference is created. Similarly, a data deduplication algorithm scans outgoing data on a network connection to check for duplicates, which are removed to increase data transfer speed.

Connect with us

Techopedia on Linkedin
Techopedia on Linkedin
Tweat cdn.techopedia.com
"Techopedia" on Twitter


'@Techopedia'
Sign up for Techopedia's Free Newsletter!

Email Newsletter

Join thousands of others with our weekly newsletter

Resources
Free Whitepaper: The Path to Hybrid Cloud
Free Whitepaper: The Path to Hybrid Cloud:
The Path to Hybrid Cloud: Intelligent Bursting To Amazon Web Services & Microsoft Azure
Free E-Book: Public Cloud Guide
Free E-Book: Public Cloud Guide:
This white paper is for leaders of Operations, Engineering, or Infrastructure teams who are creating or executing an IT roadmap.
Free Tool: Virtual Health Monitor
Free Tool: Virtual Health Monitor:
Virtual Health Monitor is a free virtualization monitoring and reporting tool for VMware, Hyper-V, RHEV, and XenServer environments.
Free 30 Day Trial – Turbonomic
Free 30 Day Trial – Turbonomic:
Turbonomic delivers an autonomic platform where virtual and cloud environments self-manage in real-time to assure application performance.