Beginning with Windows Server , Microsoft has included an innovative technology called data deduplication , which can dramatically reduce the amount of actual disk space required to store your data. Depending on the type of data, you can expect to save anywhere from 20 percent to more than 80 percent. At 20 percent savings, 10TB of data consumes only 8TB of disk storage. At 80 percent savings, 10TB consumes just 2TB. Data deduplication works by finding portions of files that are identical and storing just a single copy of the duplicated data on the disk. The technology required to find and isolate duplicated portions of files on a large disk is pretty complicated.
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Data Deduplication in Windows Server
March 24, Jennifer Deming Burnham. At its simplest definition, data deduplication refers to a technique for eliminating redundant data in a data set. 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. Given that the same byte pattern may occur dozens, hundreds, or even thousands of times — think about the number of times you make only small changes to a PowerPoint file or share another important business asset — the amount of duplicate data can be significant. Consider an email server that contains instances of the same 1 MB file attachment, say, a sales presentation with graphics that was sent to everyone on the global sales staff.
Understanding Data Deduplication — and Why It’s Critical for Moving Data to the Cloud
Data deduplication is one of the biggest game-changers in data backup and data storage in the past several years, and it is important to have a firm understanding of its basics if you're considering using it in your environment. The purpose of this tutorial is to help you gain that understanding. When the term deduplication , also referred to as data dedupe or data deduping , is used without any qualifiers e. This means that individual files are broken down into segments and those segments are examined for commonality.
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Data deduping explained: Deduplication in data backup environments tutorial