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Product: Cluster Server Guides   
Manual: Cluster Server 4.1 User's Guide   

Parallel Parent/Parallel Child

online local soft  An instance of the parent group soft depends on an instance of the child group on the same system.

An instance of a parent group can be brought online on a system, for example, System A, only if an instance of a child group is online on System A. For example, two instances of the parent are online on System A and System B, and each instance depends on an instance of the child being online on the same system.

    Checkmark  If the instance of the child group on System A faults, the child group fails over to System C. After the child fails over to another system, VCS migrates the instance of the parent group to System C. If the child cannot fail over, the parent remains online. Other instances of the parent group are unaffected.

    Checkmark  If an instance of the parent group on System B faults, it can fail over to System C only if an instance of the child group is running on System C and no instance of the parent group is running on System C.

online local firm  An instance of the parent group firm depends on an instance of the child group on the same system.

An instance of a parent group can be brought online on a system, for example, System A, only if an instance of a child group is online on System A. For example, two instances of the parent are online on System A and System B, and each instance depends on an instance of the child being online on the same system.

    Checkmark  If an instance of the child group on System A faults, the instance of the parent group on System A is taken offline. After the child fails over to another system, for example, System C, VCS brings an instance of the parent group online on System C. Other instances of the parent group are unaffected.

    Checkmark  If an instance of the parent group on System B faults, it can fail over to System C only if an instance of the child group is running on System C and no instance of the parent group is running on System C.

offline local  An instance of a parent group depends on an instance of a child group being offline on the same system and vice versa.

An instance of a parent group can be brought online provided that an instance of the child is not online on the same system and vice versa. For example, if the child group is online on System C and System D, the parent can be online on System A and System B.

    Checkmark  If the child on System C faults and VCS selects System A as the target on which to bring the child group online, the instance of the parent on System A is taken offline first.

    Checkmark  When an instance of a child group or parent group faults, it has no effect on the other running instances.

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Product: Cluster Server Guides  
Manual: Cluster Server 4.1 User's Guide  
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