Brocade Communications Systems Encryption Switch Service Manual download pdf (Page 103)

Fabric OS Encryption Administrator’s Guide (DPM) 85

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Master keys

Rebalancing an encryption engine

To rebalance an encryption engine, complete the following steps:

1. Select Configure > Encryption from the menu task bar to display the Encryption Center

dialog box (Refer to Figure 6 on page 14).

2. Select an engine, then select Engine > Re-Balance from the menu task bar.

A warning message displays, noting the potential disruption of disk and tape I/O, and that the

operation may take several minutes.

3. Click Yes to begin rebalancing.

Master keys

Master keys belong to the group and are managed from Group Properties.

When an opaque key vault is used, a master key is used to encrypt the data encryption keys. The

master key status indicates whether a master key is used and whether it has been backed up.

Encryption is not allowed until the master key has been backed up.

Only the active master key can be backed up, and multiple backups are recommended. You can

back up or restore the master key to the key vault, to a file, or to a recovery card set. A recovery

card set is set of smart cards. Each recovery card holds a portion of the master key. The cards must

be gathered and read together from a card reader attached to a PC running BNA to restore the

master key.

Although it is generally not necessary to create a new master key, you might be required to create

one due to the following:

• The previous master key has been compromised.

• Corporate policy might require a new master key every year for security purposes.

When you create a new master key, the former active master key automatically becomes the

alternate master key.

The new master key cannot be used (no new data encryption keys can be created, so no new

encrypted LUNs can be configured), until you back up the new master key. After you have backed

up the new master key, it is strongly recommended that all encrypted disk LUNs be rekeyed.

rekeying causes a new data encryption key to be created and encrypted using the new active

master key, thereby removing any dependency on the old master key. Refer to “Creating a master

key” on page 93 for more information.

Master key actions are disabled if they are unavailable. For example:

• The user does not have Storage Encryption Security permissions.

• The group leader is not discovered or managed by BNA.

NOTE

It is important to back up the master key because if the master key is lost, none of the data

encryption keys can be restored and none of the encrypted data can be decrypted.

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Brocade Communications Systems Encryption Switch Service Manual Page 103