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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. 

<img src='content_image/1005981.jpg'>

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. 

