Resource group attributes

This section provides an overview of the resource group attributes that you can use to fine-tune the startup, fallover, and fallback policies of resource groups.

Resource group attributes for startup, fallover, and fallback
Each attribute affects resource group startup, resource group fallover to another node in the case of a node failure, or resource group fallback to the reintegrating node.
Settling time for startup
You can modify a resource group's startup behavior by specifying a settling time for a resource group that is currently offline and has a startup policy of Online on First Available Node.
Node distribution policy
You can configure a startup behavior of a resource group to use the node distribution policy during startup. This policy ensures that only one resource group that has this policy enabled is acquired on a node during startup.
Dynamic node priority policy
You can configure a resource group's fallover behavior to use dynamic node priority. It allows you to use a predefined Reliable Scalable Cluster Technology (RSCT) resource variable such as lowest CPU load, to select the takeover node, or a user defined dynamic node priority variable, such as cl_highest_udscript_rc to select the takeover node.
Delayed fallback timer
You can configure a resource group's fallback behavior to occur at one of the predefined recurring times (daily, weekly, monthly and yearly, or on a specific date and time) by specifying and assigning a delayed fallback timer.
Resource group dependencies
PowerHA® SystemMirror® offers a wide variety of configurations where you can specify the relationships between resource groups that you want to maintain at startup, fallover, and fallback.

Parent topic: Planning resource groups