PRIMECLUSTER allows you to configure multiple cluster applications. The operation mode is determined depending on how you set up the cluster applications in the cluster system.
The main operation modes are listed below:
Classification | Operation mode | Number of cluster applications | Number of nodes |
|---|---|---|---|
Standby operation | 1:1 standby | 1 | 2 |
Mutual standby | 2 to (number of nodes) | 2 to (number of supported nodes) | |
N:1 standby | 2 to (number of nodes - 1) | 3 to (number of supported nodes) | |
Cascade | 1 to (number of nodes) | 3 to (number of supported nodes) | |
Priority transfer | 2 to (number of nodes - 1) | 3 to (number of supported nodes) | |
Scalable operation | Scalable | 1 to (number of nodes) | 1 to (number of supported nodes) |
High-availability scalable operation | 1 to (number of nodes) | 2 to (number of supported nodes) | |
Single-node cluster operation | - | 1 | 1 |
Note
If an operating node in one side is disconnected abruptly due to a power failure or other power supply problem, failover may not work. Take corrective action as follows:
Connect all the nodes to UPS.
