Specifications

14 – Configuring and Monitoring a Redundant Server System
302 R400
In this example, the system consists of:
• Dual networks X (link 0) and Y (link 1)
• Redundant servers, with base name hsserv and identifiers a and b. These
servers are redundantly connected, which means that each has a NIC card
for each network. The four server names are therefore hsserva0 (hsserva
connected to link 0), hsservb0 (hsservb connected to link 0), hsserva1
(hsserva connected to link 1), and hsservb1 (hsservb connected to link 1).
• Stationa, which has a redundant connection to the redundant server.
Stationa sees all four server names.
• Stationb, which has a single connection to the redundant server over
network X. Stationb sees server names hsserva0 and hsservb0.
• Stationc, which has a single connection to the redundant server over
network Y. Stationc sees server names hsserva1 and hsservb1.
The following sections contain:
• An overview of network redundancy (see “Network Redundancy” on
page 303).
• Procedures for configuring primary and backup PlantScape servers to run in
redundant mode (see “Server Redundancy Configuration Procedures” on
page 305).
plscpcg.book Page 302 Monday, May 28, 2001 10:11 AM