Managing HP Serviceguard for Linux, Eighth Edition, March 2008

Planning and Documenting an HA Cluster
Hardware Planning
Chapter 498
Kind of LAN Traffic
Identify the purpose of the subnet. Valid types include
the following:
• Heartbeat
• Client Traffic
Label the list to show the subnets that belong to a bridged net.
This information is used in creating the subnet groupings and
identifying the IP addresses used in the cluster and package
configuration files.
Shared Storage
SCSI may be used for up to four node clusters, or FibreChannel can be
used for clusters of up to 16 nodes.
Smart Array Cluster Storage
Smart Array cluster storage is limited to the following:
• two node cluster with MSA 500 and four node with MSA 500 G2
• the Smart Array built in interfaces or HBAs that are supported with
either the MSA 500 or MSA500 G2
Check the MSA storage documentation for drive and LUN configurations
that would best suit your application.
NOTE The MSA storage and Smart Array host adapters automatically set the
SCSI addresses. As a result, no user interaction is required to change or
modify any of these settings.
FibreChannel
FibreChannel cards can be used to connect up to 16 nodes to a disk array
containing storage. After installation of the cards and the appropriate
driver, the LUNs configured on the storage unit are presented to the
operating system as device files, which can be used to build LVM volume
groups.