There are limitations in switch zoning for SAN Volume Controller clusters and Pillar Axiom systems.
The SAN Volume Controller switch zone must include at least one target port from each Pillar Axiom controller to avoid a single point of failure.
Target ports can be shared between the SAN Volume Controller cluster and other hosts.
A single host cannot be connected to both the SAN Volume Controller cluster and the Pillar Axiom system to avoid the possibility of an interaction between multipathing drivers.
Pillar Axiom system LUNs that are mapped to the SAN Volume Controller cluster cannot be mapped to other hosts. Pillar Axiom system LUNs that are not mapped to the SAN Volume Controller cluster can be mapped to other hosts.