Compaq Parallel Database Cluster Model PDC/O1000 for Oracle8i and Windows 2000 Administrator Guide

2-24 Compaq Parallel Database Cluster Model PDC/O1000 for Oracle8i and Windows 2000 Administrator Guide
Compaq Confidential – Need to Know Required
Writer: John Blackburn Project: Compaq Parallel Database Cluster Model PDC/O1000 for Oracle8i and Windows 2000 Administrator Guide
Comments:
Part Number: 225083-002 File Name: c-ch2 Cluster Architecture.doc Last Saved On: 6/11/01 11:20 AM
Non-Redundant Ethernet Cluster Interconnect
Components
The following components are used in a non-redundant Ethernet cluster
interconnect:
■ One Ethernet adapter in each cluster node
■ Ethernet cables and a switch or hub
G For two-node PDC/O1000 clusters, you can either use one Ethernet
crossover cable or one 100-Mbit/second Ethernet switch or hub and
standard Ethernet cables to connect the two servers.
G For PDC/O1000 clusters with three or more nodes, you use one
100-Mbit/second Ethernet switch and standard Ethernet cables to
connect the servers.
Redundant Ethernet Cluster Interconnect
Components
The following components are used in a redundant Ethernet cluster
interconnect:
■ Two Ethernet adapters in each cluster node
■ Ethernet cables and switches or hubs
G For two-node PDC/O1000 clusters, you can use two
100-Mbit/second Ethernet switches or hubs with cables to connect
the servers.
G For PDC/O1000 clusters with three or more nodes, you use two
100-Mbit/second Ethernet switches connected by Ethernet cables to
a separate Ethernet adapter in each server.
NOTE: In a redundant Ethernet cluster configuration, one Ethernet crossover cable must
be installed between the two Ethernet switches or hubs that are dedicated to the cluster
interconnect.
Ethernet Cluster Interconnect Adapters
To implement the Ethernet cluster interconnect, each cluster node must be
equipped with Ethernet adapters capable of 100-Mbit/second transfer rates.
Some adapters may be capable of operating at both 10-Mbit/second and
100-Mbit/second; however, Ethernet adapters used for the cluster interconnect
must run at 100-Mbit/second.