单项选择题 An administrator is reviewing the /tmp/hacmp.out after an unsuccessful fallover and notice that  the event stop_server PROD_DB failed.  Besides manually intervening，what step must be performed to return the cluster to a stable state？（）

单项选择题 Company.com has non-IBM fibre attached storage. The storage is connected to a node in the  cluster that has multiple adapters and virtual paths. There is a concern about detecting the loss of one of the fibre adapters since there is no indication to the administrator that one has failed.  What feature of HACMP can be sued to assist with this issue？（）

单项选择题 Company.com has a non-IBM disk storage unit connected by two Fibre channel connections. The  Nodes have multiple connections to the storage device that allow load balancing. A failure with one Fibre adapter or connection will not be noticed by the application， but it needs to be addressed.  How can HACMP help make this environment more robust？（）