user manual

2.4 Required OpenVMS Cluster Information
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 system disk:
ExplanationRequired Information
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. HP
Integrity servers do not support CI, DSSI, or MEMORY CHANNEL devices.
Type of configuration
To 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.
DECnet node name and node
address
During 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:
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 and cannot be a number in
use by another system in the cluster.
After you enter the allocation class value, the installation procedure uses it to
automatically set the value of the ALLOCLASS system parameter.
HP 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.
Allocation class value
To help you determine whether you need a quorum disk in the cluster, see the
HP OpenVMS Cluster Systems manual.
Whether you want a quorum disk
On 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 system software.
Location of the page and swap files
If you are going to set up either a local area or a mixed-interconnect cluster, you
need to make these determinations.
Systems that will be a MOP
server
1
, disk server, or tape server
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:
• Cluster group number—A number in the range from 1 to 4095 or 61440 to
65535.
• Cluster password—Must be from 1 to 31 alphanumeric characters in length
and can include dollar signs ($) and underscores(_).
Cluster group number and cluster
password
2
1 Servers that use the Maintenance Operations Protocol (MOP).
2 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.
2.5 Dismounting the Target System Disk Elsewhere in the Cluster
Before installing OpenVMS on a target drive in an OpenVMS Cluster, make sure the target system
disk is not mounted elsewhere in the cluster. The target system disk must be dismounted
clusterwide (except on the system from which the installation is being performed) and must
2.4 Required OpenVMS Cluster Information 43