72 Implementing the IBM Storwize V7000 with IBM Spectrum Virtualize V8.2.1
3.14  NPIV planning
For more information, see N-Port Virtualization ID (NPIV) Support in Chapter 8, “Hosts” on 
page 317.
3.15  Advanced Copy Services
The Storwize V7000 offers the following Advanced Copy Services:
/SM590000FlashCopy
/SM590000Metro Mirror
/SM590000Global Mirror
Figure 3-10 shows an example of replication and storage layers.
Figure 3-10   Replication and storage layer
Note: A volume can be mapped only to a host that is associated with the I/O Group to 
which the volume belongs.
Layers: A property called layer for the clustered system is used when a copy services 
partnership exists between a Storwize V7000 and an IBM Storwize V7000. There are two 
layers: replication and storage. By default, the IBM Storwize V7000 is configured as 
storage layer. This configuration must be changed by using the chsystem CLI command 
before you use it to make any copy services partnership with the Storwize V7000.