If you intend to add additional nodes to the cluster online
(while it is running) ensure that they are connected to the same
heartbeat subnets and to the same lock disks as the other cluster
In selecting a cluster lock configuration, be careful to anticipate
any potential need for additional cluster nodes. Remember that a
cluster of more than four nodes must not use
a lock disk, but a two-node cluster must use
a cluster lock. Thus, if you will eventually need five nodes, you should
build an initial configuration that uses a quorum server.
If you intend to remove a node from the cluster configuration
while the cluster is running, ensure that the resulting cluster
configuration will still conform to the rules for cluster locks
described above. See “Cluster
Lock Planning” for more information.
If you are planning to add a node online, and a package will
run on the new node, ensure that any existing cluster bound volume
groups for the package have been imported to the new node. Also,
ensure that the MAX_CONFIGURED_PACKAGES parameter (see “Cluster
Configuration Parameters ” starting
Configuration Parameters ”) is set high enough
to accommodate the total number of packages you will be using.