If during the installation you answer YES to the system prompt
asking whether your system will be a member of an OpenVMS Cluster,
you need to provide the following information after you boot the
Type of configuration
types (CI, DSSI, SCSI, local area, or mixed-interconnect) are distinguished
by the interconnect device that the VAX, Alpha, or Integrity server
computers in the OpenVMS Cluster use to communicate with one another.
Note that HP Integrity servers do not support CI, DSSI, or MEMORY
DECnet node name and node address
obtain the DECnet node name and node address for the computer on which
you are installing the OpenVMS operating system, consult the network
or system manager. If you install DECnet-Plus for OpenVMS (Phase
V) software and do not plan to use DECnet Phase IV for OpenVMS addresses,
then you do not need to provide this information.
Allocation class value
the installation procedure, you might be asked for the allocation class
value (ALLOCLASS) of the computer on which you are installing the
OpenVMS operating system. For example:
Enter a value for this_node ALLOCLASS parameter:
Note that in an OpenVMS Cluster environment,
the allocation class value cannot be zero if the node serves DSSI
or CI disks to other cluster members, or if volume shadowing will
be used on this system or in the cluster. In either case, the ALLOCLASS
value must be a number from 1 to 255.
After you enter
the allocation class value, the installation procedure uses it to
automatically set the value of the ALLOCLASS system parameter.
recommends that you thoroughly review the chapter on cluster storage
devices in the HP OpenVMS Cluster Systems manual. This manual
also includes the rules for specifying allocation class values.
Whether you want a quorum disk
help you determine whether you need a quorum disk in the cluster, see
the HP OpenVMS Cluster Systems manual.
Location of the page and swap files
a nonclustered system, the page and swap files are on one or more local
disks, but on a clustered system, the files might be on one or more local
or clustered disks. See the HP OpenVMS Cluster Systems manual to
help you determine where the page and swap files will be located
for the system on which you are installing the OpenVMS operating
Systems that will be MOP servers, disk servers,
and tape servers
you are going to set up either a local area or a mixed-interconnect cluster,
you need to make these determinations.
If you are going to set
up a local area or mixed-interconnect cluster that is LAN-based
(Gigabit Ethernet), use the following rules to determine the cluster
group number and password:
group number—A number in the range from 1 to 4095 or 61440
Cluster password—Must be from 1 to 31 alphanumeric
characters in length and can include dollar signs ($) and underscores(_).
 Servers that use the Maintenance Operations
 Cluster group number
and password are required by any cluster nodes that use the local
area network for cluster communications. In a cluster that uses
mixed interconnects, if any of the interconnects require the cluster
number and password, then you must set the cluster number and password
for all nodes.