An affinity between resource groups restricts on which nodes the resource groups may be brought online simultaneously. In each affinity, a source resource group declares an affinity for a target resource group or several target resource groups. To create an affinity between resource groups, set the RG_affinities resource group property of the source as follows:
Specifies a comma-separated list of affinities between the source resource group and a target resource group or several target resource groups. You may specify a single affinity or more than one affinity in the list.
Specify each affinity in the list as follows:
Specifies the type of affinity that you are creating. For more information, see Figure 7, Table 7, Types of Affinities Between Resource Groups.
Specifies the resource group that is the target of the affinity that you are creating.
The current state of other resource groups might prevent a strong affinity from being satisfied on any node. In this situation, the resource group that is the source of the affinity remains offline. If other resource groups' states change to enable the strong affinities to be satisfied, the resource group that is the source of the affinity comes back online.