658 Implementing the IBM Storwize V7000 with IBM Spectrum Virtualize V8.2.1
More information about how to add encrypted storage to encrypted pools is described next. 
You can mix and match storage encryption types in a pool. Figure 12-71 shows an example of 
an encrypted pool that contains storage by using different encryption methods.
Figure 12-71   Mix and match encryption in a pool
12.8.2  Encrypted child pools
For more information about how to open the Create Child Pool window, see Chapter 6, 
“Storage pools” on page 191. If the parent pool is encrypted, every child pool also must be 
encrypted. The GUI enforces this requirement by automatically selecting Encryption 
Enabled in the Create Child Pool window and preventing changes to this setting, as shown in 
Figure 12-72.
Figure 12-72   Create a child pool of an encrypted parent pool