AserverhaslostcommunicationtoitsdriveslocatedonafiberchannelSAN.Anadministrator noticesthattheindicatorlightsonboththeHBAandtheSANswitcharenotlit.Whichofthe followingaretheMOSTlikelycausesoftheproblem？（）
A.FailedHBA
B.Failedswitchport
C.Faultyfibercable
D.Faultydriver
E.Failedharddrives
F.Faultyconfiguration
参考答案：ABC
