HP ProLiant 4500 Compaq ProLiant Cluster HA/F100 and HA/F200 Administrator Gui - Page 24

Cluster Interconnect, Client Network, Private or Public Interconnect

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1-12 Compaq ProLiant Clusters HA/F100 and HA/F200 Administrator Guide Cluster Interconnect The cluster interconnect is a data path over which nodes of a cluster communicate. This type of communication is termed intracluster communication. At a minimum, the interconnect consists of two network adapters (one in each server) and a cable connecting the adapters. The cluster nodes use the interconnect data path to: s Communicate individual resource and overall cluster status s Send and receive heartbeat signals s Update modified registry information IMPORTANT: MSCS requires TCP/IP as the cluster communication protocol. When configuring the interconnects, be sure to enable TCP/IP. Client Network Every client/server application requires a local area network, or LAN, over which client machines and servers communicate. The components of the LAN are no different than with a stand-alone server configuration. Because clients desiring the full advantage of the cluster will now connect to the cluster rather than to a specific server, configuring client connections will differ from those for a stand-alone server. Clients will connect to virtual servers, which are cluster groups that contain their own IP addresses. Within this guide, communication between the network clients and the cluster is termed cluster-to-LAN communication. Private or Public Interconnect There are two types of interconnect paths: s A private interconnect (also known as a dedicated interconnect) is used solely for intracluster (node-to-node) communication. Communication to and from network clients does not occur over this type of interconnect. s A public interconnect not only takes care of communication between the cluster nodes, it also shares the data path with communication between the cluster and its network clients.

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1-12
Compaq ProLiant Clusters HA/F100 and HA/F200 Administrator Guide
Cluster Interconnect
The cluster interconnect is a data path over which nodes of a cluster
communicate. This type of communication is termed
intracluster
communication.
At a minimum, the interconnect consists of two network
adapters (one in each server) and a cable connecting the adapters.
The cluster nodes use the interconnect data path to:
■
Communicate individual resource and overall cluster status
■
Send and receive heartbeat signals
■
Update modified registry information
IMPORTANT:
MSCS requires TCP/IP as the cluster communication protocol. When
configuring the interconnects, be sure to enable TCP/IP.
Client Network
Every client/server application requires a local area network, or LAN, over
which client machines and servers communicate. The components of the LAN
are no different than with a stand-alone server configuration.
Because clients desiring the full advantage of the cluster will now connect to
the cluster rather than to a specific server, configuring client connections will
differ from those for a stand-alone server. Clients will connect to virtual
servers, which are cluster groups that contain their own IP addresses.
Within this guide, communication between the network clients and the cluster
is termed
cluster-to-LAN communication
.
Private or Public Interconnect
There are two types of interconnect paths:
■
A private interconnect (also known as a dedicated interconnect) is used
solely for intracluster (node-to-node) communication. Communication
to and from network clients does not occur over this type of
interconnect.
■
A public interconnect not only takes care of communication between the
cluster nodes, it also shares the data path with communication between
the cluster and its network clients.