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What is Deduplication?
Deduplication identifies redundant information and stores it in a highly efficient format while maintaining the integrity of the original content. The data is stored only once, no matter how many copies are made. Vendors have chosen to call this technology many different things such as: dedupe, data reduction, single instance storage, global data single instance storage, capacity optimized storage, and even molecular sequence reduction.
Deduplication is generating a significant buzz and rightly so! All the major storage vendors have introduced deduplication products within the last few years.
Things to Consider when Contemplating Deduplication
Types of deduplication:
File-based
Block-based
Options for Deduplication
Application
Source
Target
Network
Inline Versus Post Process
Inline
Post process
Hybrid solutions
Additional factors to weigh
CPU-bound versus disk-bound
File aware (format aware)
Replication
Realistic compression ratios
Future considerations
Integration with backup software ISVs
Enterprise fit
Deciding what is right for you
There are differences between each of these terms and associated technologies, but the concept is the same: find duplicate sets of data and store it only once.
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