What takeover and giveback are
Takeover is the process in which a node takes over the storage of its partner. Giveback is the process in which that storage is returned to the partner. Both processes can be initiated manually or configured for automatic initiation.
When takeovers occur
Takeovers can be initiated manually or occur automatically when a failover event happens, depending on how you configure the . In some cases, takeovers occur automatically, regardless of configuration. HA pair
What happens during takeover
When a takeover occurs, the unimpaired partner node takes over the functions and disk drives of the failed node by creating an emulated storage system.
What happens after takeover
After a takeover occurs, you view the surviving partner as having two identities, its own and its partner’s, that exist simultaneously on the same storage system. Each identity can access only the appropriate volumes and networks. You can send commands or log in to either storage system by using the rsh command, allowing remote scripts that invoke storage system commands through a Remote Shell connection to continue to operate normally.
What happens during giveback
The local node returns ownership of the aggregates and volumes to the partner node after any issues on the partner node are resolved or maintenance is complete. In addition, the local node returns ownership when the partner node has booted up and giveback is initiated either manually or automatically.