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How does data deduplication work in Windows Server?
Applies to: Windows Server 2019, Windows Server 2016, Windows Server (Semi-Annual Channel) This document describes how Data Deduplication works. How does Data Deduplication work? Data Deduplication in Windows Server was created with the following two principles:
How are duplicates replaced in a data deduplication?
In the process of deduplication, extra copies of the same data are deleted, leaving only one copy to be stored. Data is analyzed to identify duplicate byte patterns to ensure the single instance is indeed the single file. Then, duplicates are replaced with a reference that points to the stored chunk.
How does data deduplication differ from single instance store?
There are several important differences between Data Deduplication and other common storage optimization products: How does Data Deduplication differ from Single Instance Store? Single Instance Store, or SIS, is a technology that preceded Data Deduplication and was first introduced in Windows Storage Server 2008 R2.
When did data deduplication become a global problem?
Another step function improvement to data deduplication was achieved by Druva when it addressed data redundancies at object level (versus file level), and solved for deduplication across distributed users at a global scale. By the early 2000s, business data was moving global, real-time, and mobile.
How is deduplication used to reduce data footprint?
Deduplication is about reducing the amount of data stored by removing duplicate data items from the data store. This can occur on an object/file or physical data block level, or it can be application- or content-aware. Most products combine deduplication with data compression to further reduce the data footprint.
Which is the best application for data deduplication?
Backup applications, such as Microsoft Data Protection Manager (DPM), are excellent candidates for Data Deduplication because of the significant duplication between backup snapshots. Other workloads may also be excellent candidates for Data Deduplication .
Where does deduplication take place after a backup?
After a backup to a deduplicating storage is complete, the storage system performs storage-side deduplication. Usually this process works as follows: Data blocks are moved from the backup file to a special file — the deduplication data store — within the storage. Duplicate blocks are stored only once.