单项选择题 During a planning session， the customer indicates that they intend to build two independent two- Node clusters （cluster ’A’ and ’B’） that will be provided shared storage form an IBM TotalStorage FAStT900 server. The customer intends to present 2 LUNs to cluster ’A’， and 2 LUNs to cluster ’B’. All hosts will be dual attached via fibre.  What additional hardware or software is necessary to make this a valid configuration？（）

单项选择题 During the initial cluster design，a disk heartbeat，Point-to-Point non-IP network is being planned  as part of a three-node cluster implementation. The disk environment will use LVM mirroring for disk redundancy. The volume groups will be created as Enhanced Concurrent Capable.  To facilitate disk heartbeating，how many disks per node and how many networks will be required？（）

单项选择题 Company.com has two sites that are 3072 kilometers apart and wants to implement HACMP  between eh two locations. The nodes at each location must be capable of running the application in the event of a failure. Currently the customer’s disk technology is SCSI.  How can HACMP be used in this environment？（）