You can configure software encryption for disk storage.
From the navigation pane, go to Storage > Disk > disk_storage.
The Disk page appears.
Click the disk storage that you want to add software encryption.
The disk storage page appears.
On the Configuration tab, in the Encryption section, move the Encrypt toggle key to the right.
The Add encryption dialog box appears.
Enter the encryption details:
From the Cipher list, select an encryption method.
From the Keylength list, select an encryption key length.
For Key management server, select an existing server, or add a new server.
For information about adding key management servers, see Managing a Key Management Server.