To encrypt existing data, you must migrate the data to an encrypted parity group.

Use the following process to encrypt existing data:

1. Create a new parity group.
2. Enable data encryption on the parity group. For details, see Enabling data encryption.
3. Format the LDEVs in the encrypted parity group. For instructions, see Formatting all LDEVs in a parity group.
4. Migrate the existing data to the LDEVs in the encrypted parity group. For details about data migration, contact your account team.
5. After migrating the existing data to the encrypted parity group, shred the unencrypted data (migration source volumes) to prevent the data from being leaked. For details about shredding volumes, see the Volume Shredder User Guide.