The persistent FC address of the node. If this object
is zero-length and iscsi2FcNodePersistentFCAddr is
'true' then the FC address of the node represented by
this entry is automatically assigned and made persistent.
If this object is non-zero length and
iscsi2FcNodePersistentFCAddr is 'true', then this value
is always used as FC address of the node represented by
this entry. If iscsi2FcNodePersistentFCAddr is 'false,
this object is not valid. The FC address for the node
represented by this entry is dynamically
assigned/released when the node represented by this entry
is created/destroyed.