IBM Storwize V7000 Unified - Page 22

Channel port 1 and port 2 on each node canister can be safely disconnected from
the switch with minimum effect to any volume IO with Fibre Channel hosts,
external Fibre Channel storage systems, or other Storwize V7000 or SAN Volume
Controller nodes.
2 IBM Storwize V7000 Unified: Adding Storwize V7000 File Modules to an existing Storwize V7000 system 2073-720