The Platform should be AIX, and the Release should be VCS 6.0 and later.
Verify that the ConfidenceLevel attribute is present in the values of the ArgList attribute of the DiskGroup agent type definition in the file /etc/VRTSvcs/conf/config/types.cf. If ConfidenceLevel is not present in the value of ArgList of the DiskGroup agent type definition, manually modify the DiskGroup agent type definition in /etc/VRTSvcs/conf/config/types.cf as per the file of /etc/VRTSvcs/conf/types.cf.
Follow the steps below to perform the change while Veritas Cluster Server (VCS) is running.
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Change VCS configuration to the read-write mode
#/opt/VRTSvcs/bin/haconf -makerw
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Modify the ArgList attribute of the DiskGroup agent
#/opt/VRTSvcs/bin/hatype -modify DiskGroup ArgList -add ConfidenceLevel
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Dump the VCS configuration and change configuration to the read-only mode
#/opt/VRTSvcs/bin/haconf -dump -makero