Several configurations are possible, depending on whether
you use Replication Server, whether the Replication Server is configured
for warm-standby, and whether your Adaptive Servers are configured
for failover.
Name
|
Software requirements
|
|---|
Simple
|
|
High availability, warm-standby
|
1 OpenSwitch server
and 1 Replication Coordination Module (RCM) configured to coordinate
failover through the OpenSwitch server
OpenSwitch servers in this configuration do not communicate
with each other, unlike a mutually aware configuration.
2 Adaptive Servers configured for high availability
1 Replication Server configured for warm-standby
|
Redundant high availability, warm-standby
|
2 OpenSwitch servers
(1 primary and 1 secondary)
2 RCMs configured to coordinate failover through
the OpenSwitch server
2 Adaptive Servers configured for high availability
1 Replication Server configured for warm-standby
|
Mutually aware
|
2 mutually aware,
companion OpenSwitch servers. Both mutually aware OpenSwitch servers
within the same cluster regard each other as companions and both
are aware of each other’s state and the state of the other
servers.
2 CMs or 2 RCMs (optional)
2 Adaptive Servers, which may be configured for
high availability
|
