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<img src='content_image/997855.jpg'>

For more information about CLI commands for migrating volumes to and from child pools, see Chapter 7, “Volumes” on page 263. 

## 6.1.5 Encrypted storage pools 

IBM SAN Volume Controller supports two types of encryption: hardware and software. 

Hardware encryption is implemented at an array level; software encryption is implemented at a storage pool level. For more information about encryption and encrypted storage pools, see Chapter 12, “Encryption” on page 629. 

## 6.2 Working with external controllers and MDisks 

In IBM Spectrum Virtualize terminology, external storage systems that provide resources to be used as MDisks are called Controllers . IBM SAN Volume Controller supports external storage controllers that are attached through iSCSI and Fibre Channel (FC). 

## 6.2.1 External storage controllers 

FC and iSCSI storage controllers can be managed through the External Storage pane. To access the External Storage pane, click Pools →  External Storage , as shown in Figure 6-24. 

<img src='content_image/997862.jpg'>

