单项选择题 A system administrator notices that one of the mirrored disks, hdisk7 on datavg, has had a hardware failure. What is the best method of recover without causing additional problems?（）

单项选择题 Users are complaining of slow performance. The iostat command indicates hdiskkxx is extremely busy. There is no activity on any other hdisks in the same volume group. Which of the following is the best action to take?（）

单项选择题 After installing the base operating system and the Server bundle, a system administrator decides to remove several printer definitions that the system users will not need. Which of the following procedures is the best way for a system administrator to remove the extra printer definitions?（）