Rekeying

Data in the disk and disk group can be rekeyed either periodically for better security or on-demand when the key security has been compromised.

Note From Release 5.2.6, master key rekey is supported.

The rekey operation at an individual disk level generates a new key for the disk and archives the old key. A data preparation operation is triggered to decrypt the data using old key, encrypt the data with the new key, and write it back to the disk.

The rekey operation performed at a disk group level on all the disks or a subset of disks in the disk group. KMC maintains a history of keys for all of the disks.