单项选择题 A Windows 2003 Server is no longer able to access its internal SCSI drive. The cables are connected, the drive has power, and the drive shows up in Device Manager; however, the My Computer window does not show the drive that was previously working and formatted with NTFS. Which of the following would be the FIRST step in regaining access to the drive?（）

单项选择题 A datacenter has exceeded the load on the central uninterruptible power supply （UPS） for the roomand is causing power load problems. Additional power is available， but not using the central UPS. Which of the following is the BEST temporary solution for adding new servers until an upgrade of the central UPS can occur？（）

单项选择题 Which of the following is a benefit of RAID 1?（）