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As continuous data protection (CDP) is integrated into backup environments, implementations may become complex and you may find that one CDP program doesn't meet all of your needs.
Continuous Data Protection (CDP) software is primed to tackle enterprise high-availability requirements. As companies seek to eliminate or drastically reduce backup windows and to create faster, point-in-time recoveries for more mission-critical applications, CDP software has become a viable alternative to traditional backup software and storage system-based replication software. But with multiple points where CDP software can be integrated in the storage infrastructure, and the emerging linkage of CDP with backup applications, companies may need to tackle lengthy and potentially complex CDP implementations.
Storage managers will have to weigh the benefits of CDP against these and other deployment issues to determine when it's a good time to jump on the CDP bandwagon. This article focuses mainly on CDP products from vendors who sell CDP and backup software.
CDP options
How CDP products capture and copy changed data, and the recovery options they offer, varies widely:
- Desktop and laptop CDP products are engineered to work with infrequent network connectivity, and some programs allow users to recover their own files.
- CDP products for servers presume uninterrupted network connectivity (although they can handle service disruptions) and centralized management.
- Fibre Channel SAN-attached CDP appliances assume clustered servers, hundreds of LUNs, high data change rates and present virtualized LUNs over the FC SAN to the host.
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