If VSANs are merged between site 1 and site 2 then you just need to zone your secondary host to the primary array.
hi,  We have two site primary and seconday which is 500meters apart and are in same campus in 10G LAN network. Both site DC are connected through dedicated fibre. Each site is  having one CLARiiON CX4-120C storage  and 2 MDS 9124 FC SAN Switch. Hosts are connected to storage CLARiiON CX4-120C through SAN Switch. Remote Mirror is also configured between the site trough Long Wave SFPs on Switches.  For one server at primary and secondary site we want to break remote mirror and configure Red hat linux active-passive cluster between these server with sharing of primary site storage in such a way that incase primary server fails, the secondary site server mounts the disks from primary site storage.  Please guide how to achive this activity.
how to share primary site storage to secondary site server in cluster