Failover Parent/Parallel Child

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

Failover group can be brought online on any system, for example System A, only if an instance of the child group is online on System A.

  If an instance of the child group on System A faults, the parent cannot migrate until the child has successfully failed over. After the child fails over to another system, for example, System B, the parent migrates to System B. If the instance of child cannot fail over, the parent may continue to run on System A.

Consider a configuration in which instances of the child group are online on Systems A and B and the parent group is online on System A.

  If the child faults, the parent group fails over to System B.

  If the parent faults, it fails over to System B. The child on System A remains online. The parent group now depends on the instance of the child group on System B.

online local firm (default)  Failover parent group firm depends on an instance of the child group being online on the same system.

Failoverparent group can be brought online on any system, for example, System A, only if an instance of the child group is online on System A.

  If the instance of the child group on System A faults, the parent is taken offline. After the child has successfully failed over to another system, for example System B, the parent then fails over to System B.

Consider a configuration in which multiple instances of the child group are online on Systems A and B and the parent group is online on System A.

  If the parent faults, it fails over to System B. The child on System A remains online. The parent group now depends on the instance of the child group on System B.

online global soft  Failover parent group soft depends on all online instances of the child remaining online.

Failover group can be brought online anywhere as long as one or more instances of the child group are online somewhere in the cluster.

  If one or more instances of the child group fault, the parent remains online.

Consider that multiple instances of the child group are online on Systems A and B, and the parent group is online on System A.

  If parent faults, it fails over to System B. Both instances of the child group remain online, and the parent group maintains its dependency on the instances.

online global firm  Failover parent group firm depends on all instances of the child group being online anywhere in the cluster.

Failover group can be brought online anywhere as long as all instances of the child group are online somewhere in the cluster. For example, if two instances of the child are online on Systems A and B, and the parent is online on System A, if an instance of the child group faults, the parent is taken offline on System A. After the child has successfully failed over to System C, VCS fails over the parent group to another system. If the instance of the child group cannot fail over, the parent may not be brought online.

Consider that multiple instances of the child group are online on Systems A and B, and the parent group is online on System A.

  If parent faults, it fails over to System B. Both instances of the child group remain online, and the parent group maintains its dependency on the instances.

online remote soft  Failover parent group soft depends on all instances of the child group being online on another system in the cluster.

Parent can be brought online on any system other than the system on which the child is online. For example if child group is online on Systems A and C, the parent group can be online on System B.

  If the child faults on System A, the parent remains online on System B unless VCS selects System B as the target system. After the child successfully fails over to System B, VCS brings the parent online on another system, for example, System D.

  If parent group faults on System B, both instances of the child group remain online. The parent group fails over to System D and maintains its dependency on both instances of the child group.

online remote firm   Failover parent group firm depends on all instances of the child group being online on another system in the cluster.

Failover group can be brought online anywhere as long as all instances of the child group are online on another system. For example, if a child group is online on System A and System C, the parent group can be online on System B. When the child group on System A faults, the parent is taken offline. After the child has successfully failed over to System B, VCS brings the parent online on another system, for example, System D. If the child group fails over to System D, the parent group is restarted on System B.

  If parent group faults on System B, both instances of the child group remain online. The parent group fails over to System D and maintains its dependency on both instances of the child group.

offline local  Failover parent group depends on no instances of the child group being online on the same system, and vice versa.

Failover group can be brought online anywhere as long as any instances of the child group are not online on that system, and vice versa. For example, if the child group is online on Systems B and C, the parent group can be brought online on SystemA. If the child group faults on System C, and if VCS selects System A as the target on which to bring the child group online, the parent group on System A is taken offline and the child is brought online. However, if the child group selects System D as the target, the parent group remains online on System A.

  If the parent group faults, the child group remains online. If there is no other system to which the parent can fail over, the parent remains offline.

Parallel Parent/Failover Child

online global soft  All instances of parent group soft depend on failover group.

All instances of the parent group can be online anywhere as long as the child is online somewhere in the cluster. An instance of the parent group does not fault if an instance of the child group faults.

online global firm   All instances of parent group firm depend on failover group.

All instances of the parent group can be online anywhere as long as the child is online on another system. For example, the child group is online on System A, the parent group is online on Systems A and B.

  If the child faults, all instances of the parent group are taken offline on Systems A and B. After the child has successfully failed over to System B, VCS fails over all instances of the parent group on Systems A and B to other systems. If there are no available systems, the parent group instance is restarted on the same system.

  If an instance of the parent group on System A faults, the child group remains online, and the parent group fails over to System C.

online remote soft  All instances of parent group soft depend on failover group on any other system.

An instance of the parent group can be online anywhere as long as the child is online on another system. For example, the child group is online on System A, the parent group can be online on System B and System C.

  If the child group faults and VCS selects System B as the target on which to bring the child online, the instance of the parent group running on System B is taken offline. After the child has successfully failed over to System B, VCS brings online the failed parent instance to another system, for example, System D.

However, if the child group failed over to System D, the parent remains online. (If parent group on System B faults, it fails over to System D. The child group remains online on System A.)

online remote firm (default)  All instances of parent group firm depend on failover group on any other system.

An instance of the parent group can be online anywhere as long as the child is online on another system. For example, if the child group is online on System A, the parent group can be online on System B and System C.

  If the child faults, all instances of the parent group are taken offline on System B and System C. After the child has successfully failed over to System C, VCS fails over all instances of the parent group on Systems A and B to other systems where the child is also offline. If there are no available systems and if the child is offline on the same system on which the parent was taken offline, the parent is restarted on the same system.

offline local  All instances of the parent group depend on the child group being offline on that system and vice versa.

An instance of the parent group can be brought online anywhere as long as the child is not online on the system, and vice versa. For example, if the child group is online on System A, the parent group can be online on System B and System C.

  If the child faults on System A, and if VCS selects System B as the target on which to bring the child online, the parent on System B is taken offline first. However, if the child fails over to System D, the parent group remains online on Systems B and C.

  If the parent group faults on System B, the child group remains online on System A and the parent group fails over to System D.