 | ||
| Recommended CP server configurations | ||
|---|---|---|
| Prev | About membership arbitration | Next |
Following are the recommended CP server configurations:
Multiple application clusters use three CP servers as their coordination points
See Figure: Three CP servers connecting to multiple application clusters.
Multiple application clusters use a single CP server and single or multiple pairs of coordinator disks (two) as their coordination points
See Figure: Single CP server with two coordinator disks for each application cluster.
Multiple application clusters use a single CP server as their coordination point
This single coordination point fencing configuration must use a highly available CP server that is configured on an SFHA cluster as its coordination point.
See Figure: Single CP server connecting to multiple application clusters.
Although the recommended CP server configurations use three coordination points, you can use more than three coordination points for I/O fencing. Ensure that the total number of coordination points you use is an odd number. In a configuration where multiple application clusters share a common set of CP server coordination points, the application cluster as well as the CP server use a Universally Unique Identifier (UUID) to uniquely identify an application cluster.
Figure: Three CP servers connecting to multiple application clusters displays a configuration using three CP servers that are connected to multiple application clusters.
Figure: Single CP server with two coordinator disks for each application cluster displays a configuration using a single CP server that is connected to multiple application clusters with each application cluster also using two coordinator disks.
Figure: Single CP server connecting to multiple application clusters displays a configuration using a single CP server that is connected to multiple application clusters.
