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Thales Data Protection on Demand can support requests to restore a Luna Cloud HSM Service partition to a previous state. 

Partition snapshots are taken daily and stored for 7 days. A tenant administrator can submit a partition snapshot restore request to have a partition restored to a previous state. Users can request restoration of a partition to recover from catastrophic events such as accidental zeroization of the service partition. Partition rollbacks can take up to 48 hours to complete.

Restoring a partition will undo any changes made to the service partition since the backup date, this includes removing new objects from the service partition and resetting password changes. 

Please download and complete the Partition Snapshot Restoration Request Form and include it in your support request to Thales Customer Support Portal. 

See the Partition Snapshot Restoration Guide for more information.