ExaminetheCREATEDISKGROUPcommandusedtocreateadiskgroup：SQL>CREATEDISKGROUPmiscEXTERNALREDUNDANCYDISK’ORCL：FRA3’NAMEmisc1，’ORCL：FRA4’NAMEmisc2；Inwhichsituationwouldyouusethismethodofdiskgroupcreation？（）A.Whentwo-waydiskmirroringisrequiredfortheallocationun
题目
ExaminetheCREATEDISKGROUPcommandusedtocreateadiskgroup：SQL>CREATEDISKGROUPmiscEXTERNALREDUNDANCYDISK’ORCL：FRA3’NAMEmisc1，’ORCL：FRA4’NAMEmisc2；Inwhichsituationwouldyouusethismethodofdiskgroupcreation？（）
A.Whentwo-waydiskmirroringisrequiredfortheallocationunits
B.Whenthree-waydiskmirroringisrequiredfortheallocationunits
C.WhenusinghardwaremirroringorRAID
D.WhendiskmirroringisrequiredfortheAutomaticStorageManagement（ASM）disks