复制组
- CreateDiskReplicaGroup - 创建异步复制组
 - DescribeDiskReplicaGroups - 查询一个或多个异步复制组
 - ModifyDiskReplicaGroup - 修改异步复制组
 - StartDiskReplicaGroup - 开始异步复制组
 - StopDiskReplicaGroup - 停止异步复制组
 - FailoverDiskReplicaGroup - 启用异步复制组故障切换
 - ReprotectDiskReplicaGroup - 启用异步复制组反向复制
 - DeleteDiskReplicaGroup - 删除异步复制组
 - DescribeReplicaGroupDrills - 查询复制组当前的容灾演练
 - StartReplicaGroupDrill - 对异步复制组的从盘启动容灾演练
 - ClearReplicaGroupDrill - 清理异步复制组的容灾演练