White Papers

SC Series array
18 Dell EMC SC Series: Oracle Best Practices | CML1114
The actions taken in virtual port mode when a controller or controller port failure occurs are shown in Table 7.
Failover mechanics with virtual ports
Scenario
Action taken
Normal operation
All ports pass I/O
A controller fails in a dual-controller array
The virtual ports on the failed controller move to
the physical ports on the remaining controller
Port failure
An individual port fails over to another port in
the same fault domain
3.5 Fault domains in virtual port mode
Fault domains are generally created when SC Series controllers are first configured using the Configure
Local Ports wizard. If a fault domain needs to be changed after the initial controller configuration, refer to Dell
Storage Manager Administrator’s Guide or contact Dell support for guidance. Fault domains group SC Series
controller front-end ports that belong to the same network and transport media (FC or iSCSI, but not both).
Each front-end port must belong to a fault domain (see Figure 7 and Figure 8). Ports that belong to the same
fault domain can fail over to each other because they have the same connectivity and transport protocol. Dell
EMC recommends evenly distributing connections from each controller to each fault domain.
SC Series fault domain 1 and physical/virtual port assignments