Link: What’s the Difference Between Compression, Deduplication, and Single-Instance Storage?

I recently wrote about compression, deduplication, and single-instance storage over at the IBM Storage Community.

When I talk about the various state-of-the-art capacity optimization solutions that are now appearing in the market, the same comment usually arises: “Isn’t this the same as zip?” Or a long-tenured storage pro will remind me that, “Stacker died out a long time ago, so why is this any different?”

These are good points: The difference between traditional compression and modern data deduplication is somewhat hazy. And it doesn’t help that various implementations fall all along the spectrum from “mildly interesting” to “cutting edge!”

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