KERNSAFE - iSCSI SAN Software and Storage Virtualization

Continuous Data Protection (CDP) is a real-time protection technology that records every change made to the protected data. This lets you restore data to a very precise point in time, down to the millisecond.

KernSafe iSCSI SAN provides true CDP, which differs from near-continuous protection solutions that rely on scheduled snapshots. Snapshot-based products capture data only at fixed intervals. Mirroring and replication also preserve only the latest copy of the data. If corruption is replicated or copied forward, recovery options may be limited.

With true CDP, you can return to a known-good recovery point before the corruption occurred. KernSafe iSCSI SAN also uses storage efficiently because it records only the blocks that change. For example, if only one byte changes in a 10 GB file, only the affected block needs to be protected.

To create a CDP device in KernSafe iSCSI SAN, see the Create CDP Device topic. In that workflow, you first create a CDP datastore, which is a special file that stores the latest data together with the historical block changes recorded since the device was created.

After the base CDP target is created, you can easily create a new linked target for any available point in time. This lets you expose earlier data states with millisecond-level precision.