A customer has two ED-140M directors. The bottom directors Domain ID is manually set to 1 and
the top directors Domain ID is manually set to 2. The customer merges the fabrics and the top
directors Domain ID change to 0. What would have prevented the top director from changing
Domain ID’s?

A.
Making sure that persistent Domain ID is set on both directors

B.
Blocking the port on the top director before merging the fabrics

C.
Making sure that insistent Domain ID is set on both directors

D.
Making sure that Suppress Domain RCSN is set on both directors