To declare an MDisk as self-encrypting, select  Externally encrypted  when adding external  storage in the Assign Storage view, as shown in Figure 13-77. IBM Spectrum Virtualize products can detect that an MDisk is self-encrypting by using the  SCSI Inquiry page C2. MDisks that are provided by other IBM Spectrum Virtualize products  report this page correctly. For these MDisks, the Externally encrypted option that is shown in  Figure 13-77  not  selected. However, when added, they are still considered as self-encrypting. Note:  You can override external encryption setting of an MDisk detected as self-encrypting  and configure it as unencrypted by using the CLI command  chmdisk -encrypt no .  However, only do so if you plan to decrypt the data on the backend or if the backend uses  inadequate data encryption. Figure 13-77 Declaring MDisk as externally encrypted 786  Implementing the IBM Storwize V5000 Gen2 with IBM Spectrum Virtualize V8.2.1