Managing Clusters
4-11
Compaq Confidential – Need to Know Required
Writer:
Rachel Williams
Project:
Compaq ProLiant Clusters for SCO UnixWare 7 U/300 Quick Install Guide for the Compaq ProLiant DL380
Comments:
Part Number:
221544-001
File Name:
e-ch4 Managing Clusters.doc
Last Saved On:
12/27/00 11:00 AM
Two-Node Cluster with a Single Power Supply in
Each Node
When using a two-node cluster with two UPSs, as shown in Figure 4-1,
configure the UPSs so that the cluster shuts down only if both UPSs are low
on power. The loss of a single physical UPS results in the loss of one of the
nodes but not the loss of the cluster. In this configuration, both UPSs are
combined into a single logical UPS, which results in a
UPS_SERIAL_PORT
configuration of:
UPS_SERIAL_PORT=/dev/tty00.1:/dev/tty00.2
where
/dev/tty00.1
is the device identifier for the node 1 serial port tied to
UPS 1, and
/dev/tty00.2
is the device identifier for the node 2 serial port tied to
UPS 2.
Serial
Cable
Serial
Cable
UPS 1
Node 1
Node 2
CI Serial
Cable
UPS 2
Dedicated
ServerNet I Cables
Figure 4-1. Power system for two-node cluster using ServerNet I cluster
interconnect
