534 Implementing the IBM Storwize V7000 with IBM Spectrum Virtualize V8.2.1
11.6.23  Remote Copy states and events
This section describes the various states of a MM/GM relationship and the conditions that 
cause them to change. In Figure 11-94, the MM/GM relationship diagram shows an overview 
of the status that can apply to a MM/GM relationship in a connected state.
Figure 11-94   Metro Mirror or Global Mirror mapping state diagram
When the MM/GM relationship is created, you can specify whether the auxiliary volume is 
already in sync with the master volume, and the background copy process is then skipped. 
This capability is useful when MM/GM relationships are established for volumes that were 
created with the format option.
The following step identifiers are shown in Figure 11-94:
/SM590000Step 1:
a. The MM/GM relationship is created with the -sync option, and the MM/GM relationship 
enters the ConsistentStopped state.
b. The MM/GM relationship is created without specifying that the master and auxiliary 
volumes are in sync, and the MM/GM relationship enters the InconsistentStopped 
state.
Total Volume size per I/O Group There is a per I/O Group limit of 1024 terabytes (TB) on 
the quantity of master and auxiliary volume address 
spaces that can participate in Metro Mirror and Global 
Mirror relationships. This maximum configuration uses all 
512 MiB of bitmap space for the I/O Group and allows 
10 MiB of space for all remaining copy services features.
Parameter Value