Open Enterprise Server includes support for a two-node OES Cluster Services cluster.
The full OES Cluster Services product (available through a separate purchase) is a multinode clustering product that
Can include up to 32 servers.
Is eDirectory enabled for single-point ease of management.
Supports failover, failback, and migration (load balancing) of individually managed cluster resources.
Supports shared SCSI, iSCSI, and Fibre Channel storage area networks.
For more information, see the OES 2018 SP2: OES Cluster Services for Linux Administration Guide.