question: private boolean containsMixedBackingArrays ( BlockConsistencyGroup cg ) { List < Volume > vplexVolumes = BlockConsistencyGroupUtils . getActiveVplexVolumesInCG ( cg , _dbClient , PersonalityTypes . SOURCE ) ; if ( vplexVolumes . size ( ) > 1 ) { URI storageSystemToCompare = getSourceBackingVolumeStorageSystem ( vplexVolumes . get ( 0 ) ) ; for ( Volume volume : vplexVolumes ) { URI storageSystem = getSourceBackingVolumeStorageSystem ( volume ) ; if ( ! storageSystem . equals ( storageSystemToCompare ) ) { return true ; } } } return false ; }
target:  Determines if the CG source volumes contain mixed backing arrays.