HP ProLiant Cluster HA/F500 for MA8000 Enhanced DT Supplement Guide

Introduction
The HA/F500 Enhanced DT cluster requires two types of links: network and storage.
The first requirement is for at least two network links between the servers. MSCS
uses the first network link as a dedicated private connection to pass heartbeat and
cluster configuration information between the servers. The second network link is a
public network connection that clients use to communicate with the cluster nodes.
The enhanced DT cluster configuration can use any network card that is supported by
Microsoft operating systems. However, MSCS requires that the dedicated private link
and public link between the servers be located on the same TCP/IP subnet.
Because typical network topologies such as 100-Mb Ethernet cannot normally meet
this criterion over the longer distances used in an enhanced DT cluster, another
topology, such as FDDI or ATM, must be used. FDDI network cards can be used in
each server in place of the standard Ethernet network interface cards (NICs), or
standard Ethernet NICs can be used to connect to an FDDI concentrator/ATM switch
that will connect the two sites. This type of configuration supports the longer
distances used in an Enhanced DT cluster and meets the requirement for keeping the
servers on the same TCP/IP subnet.
The second requirement is the storage link between the storage subsystems. The
servers are connected to the local storage systems, using multimode fiber optic cable.
Each storage subsystem is connected to two Fibre Channel switches at each site in a
redundant path configuration using, multimode fiber optic cable. The switches at
one site are connected to the switches at the other site by means of single-mode fiber
optic or ATM connections.
1-4 HP ProLiant Cluster HA/F500 for MA8000 Enhanced DT Supplement Guide
HP CONFIDENTIAL
Writer: Bill Akers File Name: b-ch1 Introduction
Codename: Chargers II Part Number: 324547-001 Last Saved On: 4/7/03 10:30 AM