单项选择题
A.A collection of disks presented as storage to a single server through an existing network.
B.A collection of disks presented as storage to a single server through directly attached technologies.
C.A collection of disks presented as storage to multiple servers through dedicated channels.
D.A collection of disks presented as storage to multiple servers through an existing network.
单项选择题 Whichofthefollowingreplicationmethodsprovidesadisasterrecoverysystemwithminimaldowntimetonormaloperations？（）
单项选择题 WhichofthefollowingstoragetechnologiesconnectsbyTCP/IPandisseparatefromthecompanys LAN？（）
单项选择题 UpgradingwhichofthefollowingcomponentsinaserverhastheGREATESTaffecton virtualization？（）