Manage Key Change Operations in DCNM for DKR

Key change operations involve the following:

• No data preparation—Any local key changes will result in DKR suspending host access to the remote disk. Once the local key change is verified for data integrity and the data replication to the remote end is synchronized, the admin can select the corresponding relationship and perform the sync operation in DKR. This operation will synchronized the source and destination keys and resume the host access to the remote disk.

• Data preparation—Ensure you disable DKR relationship and the replication between the source and destination disk before you start data preparation on the source disk. This is a disk array vendor specific operation. Once you complete data preparation and have verified for data integrity, follow the procedure below:.

– Enable the data replication between the source and destination using disk array vendor specific operation.

– Once data is synchronized between the source and destination disk, enable the DKR relationship. This operation will synchronize the source and estination keys.

Note Host access on the destination disk should be quiesced until the above two steps are completed.