单项选择题 An administrator is installing AIX 6.1 on a new LPAR and the boot sequence has stalled with reference code 0c31. What is the most likely cause？（）

单项选择题 An administrator suspects problems on a SCSI hard disk，but upon running diagnostics，no errors were found. What must be done to check the condition of the drive？（）

单项选择题 LPAR1 is configured to have the same 2 LUNs virtualized by a redundant pair of VIO servers.  Which command will validate that both storage paths are available？（）