单项选择题

Company.comhasanon-IBMdiskstorageunitconnectedbytwoFibrechannelconnections.TheNodeshavemultipleconnectionstothestoragedevicethatallowloadbalancing.AfailurewithoneFibreadapterorconnectionwillnotbenoticedbytheapplication，butitneedstobeaddressed.HowcanHACMPhelpmakethisenvironmentmorerobust？（）
A.Customizediskheartbeatmethodstodetectdiskadapterfailures.
B.Customizeanerrornotificationmethodthatmonitorsforvolumegroupquorumloss.
C.Customizeanerrornotificationfacilitytoactontheeventwhenreportedtotheerrorlog.
D.CustomizeaHACMPeventscripttomonitorthediskconnectionsandcauseafalloverifthereisafailure.

A.comhasanon-IBMdiskstorageunitconnectedbytwoFibrechannelconnections.TheNodeshavemultipleconnectionstothestoragedevicethatallowloadbalancing.AfailurewithoneFibreadapterorconnectionwillnotbenoticedbytheapplication，butitneedstobeaddressed.HowcanHACMPhelpmakethisenvironmentmorerobust？（）
A.Customizediskheartbeatmethodstodetectdiskadapterfailures.
B.Customizeanerrornotificationmethodthatmonitorsforvolumegroupquorumloss.
C.Customizeanerrornotificationfacilitytoactontheeventwhenreportedtotheerrorlog.
D.CustomizeaHACMPeventscripttomonitorthediskconnectionsandcauseafalloverifthereisafailure.

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Company.comhasatwo-nodeHACMPclusterwithasinglecascadingresourcegroup.Node’A’isthenormalproductionnode，andNode’B’isthestandbynode.OneofthefirststepsintheHACMPtestplanistostarttheclusterandtoverifythatalelementsfortheresourcegrouphavebeenacquired.TheadministratorwhoisconductingtheHACMPteststartstheHACMPdaemonsonNode’B’withthe’smittyclstart"command.TheadministratornoticesthatNode’B’acquirestheelementsoftheresourcegroup，includingaserviceIPlabels，asharedvolumegroup，andanapplicationserverthathasbeenstarted.TheexpectationwasthatNode’B’wouldentertheclusterinastandbystatus，ratherthanacquiringproductionresources.
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A.comhasatwo-nodeHACMPclusterwithasinglecascadingresourcegroup.Node’A’isthenormalproductionnode，andNode’B’isthestandbynode.OneofthefirststepsintheHACMPtestplanistostarttheclusterandtoverifythatalelementsfortheresourcegrouphavebeenacquired.TheadministratorwhoisconductingtheHACMPteststartstheHACMPdaemonsonNode’B’withthe’smittyclstart"command.TheadministratornoticesthatNode’B’acquirestheelementsoftheresourcegroup，includingaserviceIPlabels，asharedvolumegroup，andanapplicationserverthathasbeenstarted.TheexpectationwasthatNode’B’wouldentertheclusterinastandbystatus，ratherthanacquiringproductionresources.