About this task
The secondary server monitors the primary server by periodically
requesting a copy of the
IFM data from
the primary server. If the copy cannot be obtained because the primary
server fails or a network connectivity failure occurrs, the secondary
server starts as the primary
IFM server, and
is configured using the last copy of the data received from the primary
server. The secondary server must have at least one copy of the
IFM data, otherwise
it will start as a new
IFM server, with
no data copied from the primary
IFM server.
Note:
- If you make changes to the high-availability configuration, you
must stop and restart the server to apply the changes.
- If a secondary server replaces the failed primary server, a data
discrepancy might exist between the secondary server and primary server.
How much of a discrepancy depends on the length of time between the
last copy received and when the failover occurred.
- If the primary IFM hostname,
username or password changes, you must update the secondary server
to reflect these changes. The secondary IFM does not monitor
or failover the primary server if the IFM hostname,
username or password do not match.
- If you enable a server as a secondary server, a primary server
must also exist.
To define a secondary
IFM server for
high availability, complete the following steps.