Managing Serviceguard 11th Edition, Version A.11.16, Second Printing June 2004

Planning and Documenting an HA Cluster
Cluster Configuration Planning
Chapter 4 153
interface to make sure it can still send and receive
information. Changing this value can affect how
quickly a network failure is detected. The minimum
value is 1,000,000 (1 second). The maximum value
recommended is 15 seconds, and the maximum value
supported is 30 seconds.
MAX_CONFIGURED_PACKAGES
This parameter sets the maximum number of packages
that can be configured in the cluster. In the ASCII
cluster configuration file, this parameter is known as
MAX_CONFIGURED_PACKAGES.
Default is 0, which means that you must set this
parameter if you want to use packages. The minimum
value is 0, and the maximum value is 150. Set this
parameter to a value that is high enough to
accommodate a reasonable amount of future package
additions without the need to bring down the cluster to
reset the parameter. However, be sure not to set the
parameter so high that memory is wasted. The use of
packages requires 6MB plus about 100 KB of lockable
memory on all cluster nodes. Be sure to add one for the
VxVM-CVM-pkg if you are using CVM disk storage.
NOTE Remember to tune HP-UX kernel parameters on each
node to ensure that they are set high enough for the
largest number of packages that would ever run
concurrently on that node.
VOLUME_GROUP
The name of an LVM volume group whose disks are
attached to at least two nodes in the cluster. Such disks
are considered cluster aware. In the ASCII cluster
configuration file, this parameter is VOLUME_GROUP.
The volume group name can have up to 39 characters.
Access Control Policies