If data corrupts in a way that can’t be detected immediately. Continuous Data Protection vs RAID, Mirroring, ReplicationĬDP is different from RAID ( Redundant Array of Independent Disks), mirroring, or replication for the latter three technologies only protect the most recent one copy of the data. However, since 2013, enterprise client-server backup tools have implemented a capability for block-level incremental backup designed for large files like databases. Yet, the traditional incremental and differential backups will back up the entire file. Most continuous data protection solutions save byte or block-level differences instead of file-level differences.įor example, if 1 byte of a 1 GB file is modified, only the changed byte or block is going to be backed up. In some situations, CDP needs less storage space for image files than traditional backup. The true continuous data protection is different from traditional backup for it’s not necessary to specify the point in time to restore from until ready to recover while traditional backups only restore data from the time the backup was made. Read More Continuous Data Protection vs Traditional Backup The recovery point objective refers to the maximum targeted period in which data (transactions) might be lost from an IT service due to a major incident while the recovery time objective means the targeted duration of time and a service level within which a business process must be restored after a disaster (or disruption) in order to avoid unacceptable consequences associated with a break in business continuity. In an ideal continuous data protection, the recovery point objective is zero while the recovery time objective isn’t zero. Continuous data protection technology was patented by British entrepreneur Pete Malcolm in 1989 as a backup system in which a copy of every change made to a storage medium is recorded as the change occurs. In the true form of CDP, it enables the user or administrator to restore the protected data to any point in time. That is to essentially capture every version of the involved data that the user saves. Continuous data protection (CDP), also known as continuous backup or real-time backup, means to back up computer data by saving a copy of every change happens to the data automatically.
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