CDP, by one definition refers to, "...the backup of computer data by automatically saving a copy of every change made to that data, essentially capturing every version of the data that the user saves. It allows the user or administrator to restore data to any point in time."
These points in time are a recorded change to every change at the transactional layer. Changes are journaled in a SQL database and a user or administrator can retrieve data or restore any particular point in time.

The reason this is important in a BC strategy is because the ability to quickly and efficiently retrieve lost or damaged files is critical to your business cost-per-hour. If you lose data and you have to go back to tape, the time involved in this struggle can be very costly. On average, a small business' hourly cost is $1000.00 per hour. Therefore, if it takes you 4 hours to retrieve data from tape, effectively it costs $4000.00 to get that data back...not to mention the costs that could be involved if you have to have an engineer come on site to do the work. If the file is not recoverable at all then your costs could move from just financial to business critical.
Along with real-time local backup and off-site disaster recovery, CDP is a nice option in the mix for quick file retrieval and recovery. CDP takes a little extra storage so be sure to plan accordingly. The extra few dollars for more drive space easily outweighs the financial and emotional hit of losing files or trying to restore them from tape.
Thanks for listening,
Lynn
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