Compaq 112726-001 - ProLiant - 6500 Administrator's Manual page 64

2-40 Compaq Parallel Database Cluster Model PDC/O5000 for Oracle8i and Windows 2000 Administrator Guide
Ethernet Cluster Interconnect Components
The following components are used in a redundant Ethernet cluster
interconnect:
I
Two Ethernet adapters in each cluster node
I
Ethernet cables and switches or hubs
G
For two-node PDC/O5000 clusters, you can use two
100-Mbit/second Ethernet switches or hubs with cables to connect
the servers.
G
For PDC/O5000 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.
The Ethernet adapters must have passed Windows 2000 Advanced Server
HCT certification.
For more information about installing an Ethernet cluster interconnect, see
Chapter 5, "Installation and Configuration."
Ethernet Switch
IMPORTANT: The Ethernet switch or switches used with the Ethernet cluster
interconnect must be dedicated to the cluster interconnect. They cannot be connected to
the client network (LAN) or to servers that are not part of the PDC/O5000 cluster.
When an Ethernet cluster interconnect is used in a cluster with three or more
nodes, a 100-Mbit/second Ethernet switch is required for the cluster
interconnect path. The 100-Mbit/second Ethernet switch handles the higher
network loads essential to the uninterrupted operation of the cluster. An
Ethernet hub cannot be used.