Some analysts touted CDP as being the dark horse technology for corporate adoption in 2007. As we all know, that didn’t occur and the multitude of CDP technologies ended up confusing analysts, press and IT alike as they each tried to sort out the differences between available CDP products and what CDP’s true value proposition was. All of these factors contributed to spoiling CDP’s debut.
However, I anticipate CDP will make a comeback in 2008 for two reasons: corporate needs for data replication and higher availability. Data replication has been around for a long time (only recently under the moniker of continuous), so it is a mature technology and well understood by storage professionals in the field.
“Higher availability” is the more important feature of CDP. Companies now must choose between high availability and semi-availability. High availability is associated with synchronous replication software and provides application recoveries in seconds or minutes but at an extremely high cost. At the other extreme, is backup software that only delivers semi-availability so it can take hours, days or even weeks to recover data. CDP delivers higher availability which is an acceptable compromise between these two extremes as it can quickly recover data (typically under 30 minutes) to any point in time and at a price that is competitive with backup software.
CDP also compliments deduplication. While some may view CDP and deduplication as competing technologies (and in some respects they are), the real goal of data protection is data recovery.
This is where CDP and deduplication part ways. CDP captures all changes to data but keeps the data for shorter periods of time, typically 3 to 30 days, to minimize data stores. Deduplication’s primary objective is data reduction, not data recovery. Faster recoveries may be a byproduct of deduplication since the data is kept on disk but it is not the focus of deduplication so recoveries from deduplicated data do not approach the granularity that CDP provides.
So what’s in store for CDP in 2008? The staying power of new data protection technologies is now largely determined by whether it is adopted by small and midsize businesses. If it’s practical and works there, it will find its way into the enterprises because more and more enterprises work as a conglomeration of small businesses despite corporate consolidations. So, it is not a matter of if CDP will gain momentum in 2008, it is a question of how quickly it will become the predomimant technology that companies use to protect all of their application data.