Asm disk group because bad disk can not be hung, can you directly delete?

由于磁盘有损坏，asm磁盘组mount不起来，数据已经迁移到新组当中，原磁盘组中的数据怎么清理，还是可以直接卸载删除磁盘组

如果数据未能迁移出，由于磁盘问题导致磁盘mount不起来怎么处理

(Translated by Moderator)

Because the disk is damaged, asm disk group mount can not be migrated to a new group, the data in the original disk group can be cleaned up, or the deletion of disk group can be directly dismounted if the data failed to migrate, due to disk problems caused the disk mount can not be handled