单项选择题 A SAN attached production file server is required to be backed up nightly according to company policy. Recently the data to be backed up has increased to approximately 4TB. Currently, the server has a single attached LTO2 tape drive. Which of the following should the server administrator do to provide enough backup capacity for the nightly job?（）

单项选择题 WhichofthefollowingRAIDarraysshouldbeusedtoachievetheBESTfaulttolerance？（）

单项选择题 WhichofthefollowingistheBESTwaytoallowwebsoftwarethroughtheserverfirewall？（）