Query on Configure Virtual Disk Multipathing

@primary-vds0

 Hi Experts,

While having alternate I/o domain we can map a multipathed disk to LDom, just trying to understand how it works

http://docs.oracle.com/cd/E37707_01/html/E29665/configuringvdiskmultipathing.html#scrolltoc

1. Export the virtual disk back end from the primary service domain.

   # ldm add-vdsdev mpgroup=foo backend-path1 volume@primary-vds0

   where backend-path1 is the path to the virtual disk back end from the primary domain.

2. Export the same virtual disk back end from the alternate service domain.

   # ldm add-vdsdev mpgroup=foo backend-path2 volume@alternate-vds0

   where backend-path2 is the path to the virtual disk back end from the alternate