This section describes how to manage snapshots of crypto disks. Snapshot management is different for signature and non-signature clusters.
To manage crypto snapshots that are discovered by a same host through the same SME cluster as the source disk, then follow the below procedure:
1. Start a discovery in SME for configuring the snapshot disks.
2. If SME finds a valid SME metadata on the disk media with no corresponding active key in the Key management center (KMC) then the disk is put in a failed state by SME.
3. The administrator has the option to recover the disk using recovery from- metadata option.
4. Once the above recovery is performed, the snapshot comes up as a crypto disk and it can be accessed by the host.
To manage snapshots that are being discovered by a different host through a differnt SME cluster from the source, use DKR and follow the below procedure:
1. tart a discovery in SME for configuring the snapshot disks.
2. Once the snapshot disks are configured into SME, create a DKR relationship between the source and snapshot disk.
3. Enable the DKR relationship to synchronize the source and snapshot key.
4. Destroy the DKR relationship between the source and snapshot.
5. Host can now have access to the snapshot disk.
Note Ensure you destroy the DKR relationship between the source and snapshot after key synchronization. If the source key is rekeyed, it may result in data integrity issues on the snapshot.