Managing HP Serviceguard A.12.00.00 for Linux, June 2014

Subnet Name The IP address for the subnet. Note that heartbeat IP addresses must
be on the same subnet on each node.
Interface Name The name of the LAN card as used by this node to access the subnet.
This name is shown by ifconfig after you install the card.
IP Address The IP address to be used on this interface.
An IPv4 address is a string of 4 digits separated with decimals, in
this form:
nnn.nnn.nnn.nnn
An IPV6 address is a string of 8 hexadecimal values separated with
colons, in this form:
xxx:xxx:xxx:xxx:xxx:xxx:xxx:xxx
For more details of IPv6 address format, see Appendix D (page 303).
Kind of LAN Traffic 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.
4.3.3 Shared Storage
FibreChannel and iSCSI can be used for clusters of up to 32 nodes.
4.3.3.1 FibreChannel
FibreChannel cards can be used to connect up to 32 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.
NOTE: Multipath capabilities are supported by FibreChannel HBA device drivers and the Linux
Device Mapper. Check with the storage device documentation for details.
4.3.3.2 iSCSI
You can use the storage link based on IP to connect up to 32 nodes to a disk array containing
storage. 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.
NOTE: Configuring multiple paths from different networks to the iSCSI LUN is not supported.
You can use the worksheet to record the names of the device files that correspond to each LUN
for the Fibre-Channel-attached and iSCSI attached storage unit.
4.3.4 Disk I/O Information
You may want to use the Hardware worksheet in Appendix C to record the following information
for each disk connected to each disk device adapter on the node:
Bus Type Indicate the type of bus. Supported buses are SAS (Serial Attached SCSI)
and FibreChannel.
LUN Number Indicate the number of the LUN as defined in the storage unit.
80 Planning and Documenting an HA Cluster