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NetApp Knowledge Base

Nodes will not boot, error: Unable to restore data access on encrypting disk

Last Updated:

Applies to

  • ONTAP 9
  • NetApp Storage Encryption (NSE)
  • External Key Management (EKM)
  • Onboard Key Management (OKM)


  • ONTAP nodes using NSE will not boot after a power outage
  • SP console logs show the following errors:

[node:raid.assim.tree.noRootVol:error]: No usable root volume was found!
No root volume found in this system with Storage Encryption drives in 8 consecutive boot attempts.
Halting to limit possible authentication lockout.
For further assistance, contact technical support.

nse.op.failed:error]: Control failure on self-encrypting drive 0b.00.0; security provider: Locking, authority: BandMaster1, during operation "ent_lock_unlock_data_band_sm"
disk.encryptAccessErr:error]: Unable to restore data access on encrypting disk 0b.00.0; status security unknown key (0xe)
disk.init.err.unsupported:error]: Disk 0b.00.0 is not recognized as a supported disk and cannot be used on this node
disk.encryptNoSupport:ALERT]: Detected FIPS-certified encrypting drive 0b.00.0, but FIPS drives are not supported on this node. 18 of 18 disks checked are FIPS-certified




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