text: 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: 
  
  (cid:129) Zoning rules 
  
  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. 