What does cdp mean

CDP means Continuous Data Protection.

CDP (Continuous Data Protection) is a technology that revolutionizes the traditional data backup technology. Traditional data backup solutions have focused on periodic backups of data, and as a result have been accompanied by problems with backup windows, data consistency, and impact on production systems.

The CDP technical group published a technical document for CDP that clearly states the three main criteria for CDP:

1) any data changes can be captured;

2) it can be backed up to at least one other location;

3) it can be restored to any point in time. Only a CDP product that meets all three of these requirements can be called a true CDP, based on which replication-type technologies (synchronous as well as asynchronous mirroring, etc.), snapshot technologies (pointer snapshots as well as split-mirror snapshots, etc.), and any scheduled backups with a backup window would not be considered a CDP product.

1. CDP technology classification

1) quasi-CDP (Near CDP): quasi-CDP technology is in accordance with a certain time frequency, continuous recording and backup data changes, each backup has a certain time window, the need for data recovery, can be restored to the point in time of the past backups, and can not be formed in the full sense of the continuous protection, and is therefore known as quasi-CDP technology. Also called Near CDP technology. Quasi-CDP technology in the market publicity has broken through the original qualification, is widely used to refer to a certain period of time in accordance with the continuity of the protection of data technology, in fact, many companies actually use the snapshot technology, but also classified as a quasi-CDP technology ranks;

2) real CDP (Real CDP): is a continuous and uninterrupted monitoring and backup of the data changes can be restored to any point in the past, is the real CDP technology. Any point in time in the past, is a real real-time backup. In practice, real CDP technology is generally used less, on the one hand, the technical reasons, the need to solve the technical problems of continuous uninterrupted monitoring and recording of data; on the other hand, due to the real CDP technology to continuously back up a large amount of data, far greater than the amount of data generated by other backup methods, the formation of a greater pressure on the data storage; in addition to the program costs are relatively high, and the majority of the user's data is less necessary to To achieve zero loss, most CDP backup products use quasi-CDP technology.