Chapter 9. Storage migration 391
5. Prepare the environment migration by following the instructions that are shown in 
Figure 9-5.
Figure 9-5   Preparing your environment for storage migration
The preparation phase includes the following steps:
a. Before migrating storage, ensure that all host operations are stopped to prevent 
applications from generating I/Os to the migrated system.
b. Remove all zones between the hosts and the system you are migrating.
c. Hosts usually do not support concurrent multipath drivers at the same time. You might 
need to remove drivers that are not compatible with the Storwize V7000, from the hosts 
and use the recommended device drivers. For more information about supported 
drivers, see the IBM SSIC.
d. If you are migrating external storage systems that connect to the system that uses 
Fibre Channel or Fibre Channel over Ethernet connections, ensure that you complete 
appropriate zoning changes to simplify migration. Use the following guidelines to 
ensure that zones are configured correctly for migration:
Z o n i n g  r u l e s
For every storage system, create one zone that contains this system’s ports from 
every node and all external storage system ports, unless otherwise stated by the 
zoning guidelines for that storage system.