Storage : WWID's recorded in RHEV database - why ?

Hi

What is the reason for storing the WWID's of the luns that make up a fibre channel based storage domain in the RHEV database?   Is it purely so the manager knows which luns have been allocated and is able to identify newly added luns ?

The reason for my question is that if WWID's were not recorded it would allow customers to use replicated storage solutions for disaster recover/business continuity purposes. As it stands, the WWID's of the replicated luns would not match what is recorded in the database and I'm pretty sure RHEV manager would flag as an issue. (Worse still, it might identify the luns as "new" and possibly allow the user to add luns to a storage domain that are in fact already in use with existing PV's.)

I am refering to field "lun_id" in the "luns" table in the RHEV DB.

Thanks