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How to return SED to factory-configured settings after OKM data authentication key is lost

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Applies to

  • ONTAP 9
  • Onboard Key Manager (OKM) 
  • Only data-key-id on SEDs
  • Self-encrypting drives (SEDs). Example:
    • X365_TPM4V1T6AMD
    • X440_TPM3V800AMD

Description

WARNING

Sanitizing one or more self-encrypting disks (SEDs), renders the existing data on the SEDs impossible to retrieve.
  • The only method to restore the encryption key is by having cluster passphrase and restoring the backup information of Onboard key Manager with output from

::> security key-manager onboard show-backup

  • This operation employs the inherent erase capability of SEDs to perform all of the following changes:
    • Changes the disk encryption key to a new random value
    • Resets the power-on lock state to false
    • Sets the  data authentication key (AK) to the default manufacture secure ID (MSID). 

 

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