548 Implementing the IBM Storwize V7000 with IBM Spectrum Virtualize V8.2.1
If the consistency group is disconnected at the time that the command is issued, the 
consistency group is deleted only on the system on which the command is being run. When 
the systems reconnect, the consistency group is automatically deleted on the other system.
Alternatively, if the systems are disconnected and you still want to remove the consistency 
group on both systems, you can issue the rmrcconsistgrp command separately on both of 
the systems.
If the consistency group is not empty, the relationships within it are removed from the 
consistency group before the group is deleted. These relationships then become stand-alone 
relationships. The state of these relationships is not changed by the action of removing them 
from the consistency group.
11.7.15  Reversing Metro Mirror/Global Mirror relationship
Use the switchrcrelationship command to reverse the roles of the master volume and the 
auxiliary volume when a stand-alone relationship is in a consistent state. When the command 
is issued, the wanted master must be specified.
11.7.16  Reversing Metro Mirror/Global Mirror consistency group
Use the switchrcconsistgrp command to reverse the roles of the master volume and the 
auxiliary volume when a consistency group is in a consistent state. This change is applied to 
all of the relationships in the consistency group. When the command is issued, the wanted 
master must be specified.
11.8  Native IP replication
IBM Spectrum Virtualize can implement Remote Copy services by using FC connections or 
IP connections. This chapter describes the IBM Spectrum Virtualize IP replication technology 
and implementation.
11.8.1  Native IP replication technology
Remote Mirroring over IP communication is supported on the IBM SAN Volume Controller 
and Storwize Family systems by using Ethernet communication links. The IBM Spectrum 
Virtualize Software IP replication uses innovative Bridgeworks SANSlide technology to 
optimize network bandwidth and utilization. This function enables the use of a lower-speed 
and lower-cost networking infrastructure for data replication. 
Important: Remember that by reversing the roles, your current source volumes become 
targets, and target volumes become source. Therefore, you lose write access to your 
current primary volumes.
Demonstration: The IBM Client Demonstration Center shows how data is replicated using 
Global Mirror with Change Volumes (cycling mode set to multiple). This configuration 
perfectly fits the new IP replication functionality because it is well designed for links with 
high latency, low bandwidth, or both. For more information, see this web page (log in 
required).