![]() ![]() Going from 20:1 to 25:1 only yields an extra 1% savings and reduces the data by about 10 GB more than using 20:1. However, a 25:1 compression ratio reduces the size of the data to only 40.96 GB. A 20:1 compression ratio reduces the size of the data from 1 TB to 51.2 GB. To show you what I mean, consider what happens when you deduplicate 1 TB of data. Hence, higher compression ratios have diminishing returns. It is impossible to deduplicate a file in a way that shrinks the file by 100%. Although higher ratios do convey a higher degree of deduplication, they can be misleading. ![]() ![]() The effectiveness of data deduplication is measured as a ratio. 2: Higher ratios produce diminishing returns Most backup products that are currently being offered also support deduplication. Compression utilities such as WinZip perform deduplication, but so do many of the WAN optimization solutions. 1: Deduplication is used for a variety of purposesĭeduplication is used in any number of different products. That being the case, I decided to write this blog post as sort of a crash course in data deduplication for those who might not be familiar with the technology. If you're new to the technology, these key facts will help you get up to speed.Īlthough certainly not new, deduplication seems to recently have become a much hotter trend. 10 things you should know about data deduplicationĭeduplication is touted as one of the best ways to manage today's explosive data growth. ![]()
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