This object identifies the source logic volume of the SafeCache.
The object identified by this index is the same object as identified
by the same value of hh3cLvindex.
Note that an entry of hh3cSafeCacheConfigTable can be created only when
the associated hh3cSafeCacheDistributeTable's objects is ready or the associated
select policy is not equal to 'none'.
If an entry is deleted, the associated hh3cSafeCacheDistributeTable
objects should be deleted automatically.