Brocade Fabric OS Encryption Administrator's Guide v6.3.0 (53-1001341-02, July 2009)

144 Encryption Administrator’s Guide
53-1001341-02
Data mirroring deployment
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If metadata is not present on the LUN
In very rare cases, metadata may not be present on the LUN. The record archived in the key vault
refers only to the primary LUN, and not to the LUN replication. With no metadata present in the
replicated blocks, there is no key ID to use to retrieve the DEK from the key vault. User intervention
is needed to query the key vault to get the key ID.
1. Map the primary LUN to the replicated or snapshot LUN.
2. Based on the primary LUN information (mainly target WWN, LUN number, or LUN SN), you can
query key records from the key vaults. For this, you need to refer to key management system’s
documentation to find out how to query key records.
3. Identify the key used during the replication or snapshot of the LUN based on the creation and
expiry time of the key at the time the LUN was replicated.
4. When the record is identified, provide the Key ID for the key record as input to the LUN addition
for this LUN on the encryption switch or blade. This is done from the key management
system’s user interface. Refer to the user documentation for the key management system.