Deduplication Technology

by admin on December 10, 2009

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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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