NetApp Volume Encryption (NVE) No, encryption enable on an existing volume with user data is non-disruptive. If encounter any performance issues during the operation, run the volume encryption convers...NetApp Volume Encryption (NVE) No, encryption enable on an existing volume with user data is non-disruptive. If encounter any performance issues during the operation, run the volume encryption conversion pause command to pause the operation, and the volume encryption conversion resume command to resume the operation. If need to unencrypted the volume again, refer: Unencrypt volume data Enable encryption on an existing volume FAQ - NetApp Volume Encryption and NetApp Aggregate Encryption