This section describes encryption restrictions for disks on the
Dell XC Series Hyper-Converged Appliance.
If encryption has never been enabled and you do not plan to use it in the future, secure encrypted drives (SED) can be mixed with unencrypted (non-SED) drives in the same node.
If encryption was never enabled and remains disabled, encrypted nodes can be mixed with unencrypted nodes in the same cluster.
Encryption is not supported for NVMe drives.
All nodes in the cluster must have SED capable drives to use Data at Rest encryption.
NOTE: If SED drives are mixed with non-SED drives, the encryption cannot be enabled for that cluster.
An encryption key must be removed from the SED drives from Prism before you format (clear) the SED drives.
A key server is required for Data at Rest Encrpytion in a cluster.
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