Specifications

Defining the Redundant Connections
PlantScape Server and Client Configuration Guide 313
Hardware Definition File Entries for Software Arbitration
You define software arbitration as follows in a hardware definition file:
DEL PSW00
ADD PSW00 NETWORK_PSW RECOVER=recover_option
Where:
recover_option
Is ABORT or REBOOT. ABORT means that when a failover occurs,
PlantScape Server is stopped and restarted on the failed server. REBOOT
means that when a failover occurs, PlantScape Server is stopped and the
database unloaded on the failed server. The server is then restarted.
Example The following hardware definition file entries would be used for a redundant
server system with software arbitration. When a failover to the backup server
occurs, PlantScape is stopped and restarted on the primary server.
DEL PSW00
ADD PSW00 NETWORK_PSW RECOVER=ABORT
Data Links between Primary and Backup Servers
When the primary and backup servers are running in redundant mode, all
database changes on the primary server are sent to the backup server via one or
more data links. (A data link is a network path between the primary server and
the backup server.)
Hardware Building the Data Links
A hardware definition file must be created defining the data links. This file must
be hardware built (using the hdwbld utility) on both servers.
The example hardware definition file \server\user\redun.hdw also
includes data link definition examples.
Single Network Data Link Definition
The single network data link configuration is illustrated in Figure 14.2, “Single
Network Configuration” on page 306.
You define the single data link as follows in a hardware definition file:
DEL LNK00
ADD LNK00 NETWORK_LINK
plscpcg.book Page 313 Monday, May 28, 2001 10:11 AM