Continuous data protection (CDP) seems attractive for people who want to speed backup and recovery times, but are you seeing any increase in adoption?
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It depends on your definition of CDP. If you are asking about the textbook (SNIA) definition for CDP, I really have not seen it take off the way that it could have -- mostly because the purist definition implies transactional recovery.
If you use the layman's definition of continually replicating data for fast resumption of service, I am a huge fan. That would include application-centric approaches like SQL database mirroring or Exchange database availability groups -- or third-party methods like DoubleTake.
In those approaches, you are continuously protecting data (lowercase cdp or near-CDP) which allows for near immediate resumption of service, as well as some interesting offloaded backup capabilities. These are not true-CDP offerings because they don't always provide that granular "per-transaction" rollback, but make no mistake, they are continuously protecting data.
All of these CDP solutions offer near-immediate recovery capabilities of snapshot rollback -- but from a second server that is often geographically separated from the original. And that is a compelling scenario.
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