Veritas Storage Foundation 5.1 SP1 Cluster File System Installation Guide (5900-1510, April 2011)

Cluster environment requirements

If your configuration has a cluster, which is a set of hosts that share a set of disks,

there are additional requirements.

To set up a cluster environment

If you plan to place the root disk group under VxVM control, decide into which

disk group you want to configure it for each node in the cluster. The root disk

group, usually aliased as bootdg, contains the volumes that are used to boot

the system. VxVM sets bootdg to the appropriate disk group if it takes control

of the root disk. Otherwise bootdg is set to nodg. To check the name of the

disk group, enter the command:

# vxdg bootdg

Decide on the layout of shared disk groups. There may be one or more shared

disk groups. Determine how many you wish to use.

If you plan to use Dirty Region Logging (DRL) with VxVM in a cluster, leave

a small amount of space on the disk for these logs. The log size is proportional

to the volume size and the number of nodes. Refer to the Veritas Volume

Manager Administrator’s Guide for more information on DRL.

Install the license that supports the clustering feature on every node in the

cluster.

Prerequisites for Veritas Storage Foundation Cluster

File System

Each cluster node must be connected to the public network and each must have

a unique host name by which it can be addressed on the public network. The local

node from which you install does not have to be part of the cluster.

Provide the following information when installing the SFCFS:

■ The cluster name, beginning with a letter (a-z, A-Z).

■ A unique ID from 0-65535 for the cluster. Within the public subnet, a new

cluster using a duplicate cluster ID can cause existing clusters to fail.

■ The host names of the cluster nodes.

■ The device names of the network interface cards (NICs) used for the private

networks among nodes.

■ Establishing communication between nodes is required to install Veritas

software from a remote system, or to install and configure a cluster. The node

39Before you install

Cluster environment requirements