Atechnicianmanagesaserverthatcontainssensitivedata.Theservercurrentlyhastwohard drives，onehostingtheoperatingsystemandothergenericfilesandthesecondhostingsensitive data.Thetechnicianneedstoimplementatechnologythatwouldguardagainstdatalossforonly thesensitivedata，whileaddingonlyoneadditionalharddrive.Whichofthefollowingshouldthe technicianimplementtoavoidreformattinganydrives？（）
A.RAID0
B.RAID1
C.RAID3
D.RAID5
参考答案：B
