Supported Fault Tolerant Architecture - Compaq 1850R - ProLiant - 128 MB RAM Technical Manual

Supported Ethernet Interconnects for Compaq Parallel Database Clusters using Oracle Parallel Server

Supported Fault Tolerant Architecture

A fault tolerant architecture consists of combining Microsoft NT and Compaq software with
Compaq Fast Ethernet Network Interface Controllers (NICs) in the Compaq NC Series, to create
redundancy. With this configuration, two NICs can be configured for a fault tolerant network
with a path for primary and a path for secondary or backup communication on separate NICs
(either dual or single port), for each node. This path/port teaming feature is enabled with a
Compaq utility in the Microsoft Windows NT 4.0 network control panel.
Several configurations are supported for the cluster interconnect and the client LAN. In this
document, only the most robust configuration that will provide both the highest availability and
performance is recommended (See Figure 2). (This document will address redundancy in both the
LAN and cluster interconnect. It is not required that both networks be fully redundant to be
supported, any combination will work as well.)
The following configuration can be achieved using either two dual-port NICs or four single-port
NICs or a combination of the two in each server. Two switches for the cluster interconnect and
two hubs or switches for the client LAN connections are shown here. This configuration is the
recommended architecture for optimal fault.
TEAM-A
Port-1
Port-2
TEAM-B
ECG062/0299
SERVER-1
N
NIC NIC
Figure 2. Fault Tolerant Configuration
ENET SWITCH-2
ENET SWITCH-1
SAN
SERVER-N
::::::::::::::::::::::::::::::::::
Port-1
Port-2
LAN
ENET SWITCH/HUB-1
ENET SWITCH/HUB-2
TEAM-A
NIC NIC
TEAM-B
To public LAN (Clients)
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