ABC.com’s storage environment is organized into four single-director fabrics, one each for the
Engineering, Marketing, Sales, and Finance divisions. The directors are MDS-9509s populated
with several switch modules providing 64 switch ports in each director.
Hosts and storage frames connect to each fabric with no more than 70% of available ports in use.
There is complete isolation between the four SAN islands.
With the planned rollout of new cross-functional applications, the customer needs hosts in each
fabric to access storage in the other three fabrics. It is acceptable for host-to-storage traffic to
traverse up to two hops.
What is the most efficient and least disruptive SAN solution that would meet this need?

A.
Convert to core/edge single fabric isolating all storage to the core director

B.
ISLs between adjacent director-pairs to create a partial mesh

C.
Implement Inter-VSAN routing to allow traffic to traverse VSANs

D.
ISLs between all director-pairs to create a full mesh