Use the System Automation for
Multiplatforms cluster for
higher server and database availability during a failure. By using the System Automation for
Multiplatforms failover function, server components such
as the database can automatically recover from a failure.
The IBM
Storage Protect server and the IBM
Db2 database are the underlying server components
for this two-node cluster. The server is the core component. It is responsible for client and server
activity. The Db2 database is an internal
component, which is installed as part of the server.
The server controls all database activity such as startup and shutdown. When the server detects a
server or database component failure, it tries to restart the database. If the restart fails, the
server and database are automatically shut down on the primary node and System Automation for
Multiplatforms automatically starts these components on
the secondary node. Because the IBM
Storage Protect functions
are restored immediately, server and database availability is higher. Figure 1. The failover function. The server and database components fail on the primary node. System Automation for
Multiplatforms starts these components on the secondary
node.
The server and the database include the following log directories, which are used for storage:
IBM
Storage Protect instance directory
Active log directory
Archive log directory
Database directory
The two nodes in this System Automation for
Multiplatforms cluster
are configured to access highly available shared storage that protects the data. For example, a
two-node topology includes a primary node and a secondary node. These nodes are on separate physical
systems but they can access the same data by using the shared storage array.Figure 2. Multiple IBM
Storage Protect server instances on
separate nodes. These server instances are on separate physical systems. These instances can access
the highly available shared storage.
