单项选择题 Whichofthefollowingtoolsrestrictsdeviceinstallation？（）

单项选择题 An administrator reboots a ten drive server， with a RAID 10 array， after a power failure and receives an error logical drive failed.  Which of the following is the MOST likely cause？（）

单项选择题 There is a power outage and all servers are shut down properly by the uninterruptible power supply（UPS） software. When one of the servers starts up it displays a logical drive failed error. This server has two processors，16GB of memory， and a RAID 5 array with 10 drives.  Which of the following is the MOST likely cause？（）