The state of individual Sequencer processes on each paired Unity server determine HA status.
This table describes the states that indicate status of paired HA servers.
Status | Description |
---|---|
Not Enabled | Indicates the Unity servers are not paired for high availability. |
In Peer | Indicates one of the Sequencer processes is in the Active state, and the other is in the Standby Synchronized state. |
Not in Peer | Indicates the Unity servers are paired, but the Sequencer process cannot perform an automatic failover. |
Establishing Peer | Indicates the Unity servers are paired, but the Sequencer process cannot perform an automatic failover. |
Split Brain | Indicates the Unity servers are paired, but the Sequencer process cannot perform an automatic failover. |
You must intervene if the Sequencer process cannot perform an automatic failover.
This table describes the relationship between the states of both Sequencer processes and the resulting paired HA status.
Sequencer State | Combination | Paired HA Status |
---|---|---|
Down | Waiting | Not in Peer: Waiting for Sequencer startup |
Waiting | Waiting | Establishing Peer: Waiting for Sequencers |
Active | Standby-Synchronizing | Establishing Peer: Synchronizing |
Active | Standby | In Peer |
Active | Standby-Unsynchronized | Not in Peer: Cannot fail over |
Active | Down | Not in Peer: Cannot fail over |
Down | Standby-Unsynchronized | Not in Peer: Cannot fail over |
Active | Active | Split Brain |
Disabled | Disabled | Split Brain |