OpenVMS Cluster Systems - OpenVMS Systems - HP

Preparing a Shared Environment
5.6 Coordinating Startup Command Procedures
Prepare the SYSTARTUP_VMS.COM procedure as follows:
Step Action
1 In each computer’s SYS$SPECIFIC:[SYSMGR] directory, edit the SYSTARTUP_
VMS.TEMPLATE file to set up a SYSTARTUP_VMS.COM procedure that:
• Performs computer-specific startup functions such as the following:
Setting up dual-ported and local disks
Loading device drivers
Setting up local terminals and terminal server access
• Invoking the common startup procedure (described next).
2 Build a common command procedure that includes startup commands that you want to be
common to all computers. The common procedure might contain commands that:
• Install images
• Define logical names
• Set up queues
• Set up and mount physically accessible mass storage devices
• Perform any other common startup functions
Note: You might choose to build these commands into individual command procedures that
are invoked from the common procedure. For example, the MSCPMOUNT.COM file in the
SYS$EXAMPLES directory is a sample common command procedure that contains commands
typically used to mount cluster disks. The example includes comments explaining each phase
of the procedure.
3 Place the common procedure in the SYS$COMMON:[SYSMGR] directory on a common system
disk or other cluster-accessible disk.
Important: The common procedure is usually located in the SYS$COMMON:[SYSMGR]
directory on a common system disk but can reside on any disk, provided that the disk is
cluster accessible and is mounted when the procedure is invoked. If you create a copy of the
common procedure for each computer, you must remember to update each copy whenever you
make changes.
5.6.3 Combining Existing Procedures
To build startup procedures for an OpenVMS Cluster system in which existing
computers are to be combined, you should compare both the computer-specific
SYSTARTUP_VMS and the common startup command procedures on each
computer and make any adjustments required. For example, you can compare
the procedures from each computer and include commands that define the same
logical names in your common SYSTARTUP_VMS command procedure.
After you have chosen which commands to make common, you can build the
common procedures on one of the OpenVMS Cluster computers.
5.6.4 Using Multiple Startup Procedures
To define a multiple-environment cluster, you set up computer-specific versions
of one or more system files. For example, if you want to give users larger
working set quotas on URANUS, you would create a computer-specific version
of SYSUAF.DAT and place that file in URANUS’s SYS$SPECIFIC:[SYSEXE]
directory. That directory can be located in URANUS’s root on a common system
disk or on an individual system disk that you have set up on URANUS.
Preparing a Shared Environment 5–15