The following sections describe how to back up the system
disk.
Getting Started Before you back up the system disk, do the following:
In an OpenVMS
Cluster environment, dismount the system disk from all systems in
the cluster that have the disk mounted as a data disk (rather than
as the system disk).
Choose the DCL option (7) from the menu. For example:
****************************************************************
You can install or upgrade the OpenVMS Alpha operating system
or you can install or upgrade layered products that are included
on the OpenVMS Alpha operating system CD/DVD.
You can also execute DCL commands and procedures to perform
"standalone" tasks, such as backing up the system disk.
Please choose one of the following:
1) Upgrade, install or reconfigure OpenVMS Alpha Version 8.2
2) Display products and patches that this procedure can install
3) Install or upgrade layered products and patches
4) Show installed products
5) Reconfigure installed products
6) Remove installed products
7) Execute DCL commands and procedures
8) Shut down this system
Enter CHOICE or ? for help: (1/2/3/4/5/6/7/8/?) 7
At the triple dollar sign prompt ($$$), enter the
SHOW DEVICES command.
Examine the list of devices so you can determine
which device is the source drive (the system disk you want to back
up) and which device is your target drive (the supported disk or
tape device that will hold the backed up files).
Mounting Devices When you have determined which devices will be the source
drive and target drive, mount those devices (and any other output
devices you plan to use) before you perform any backup operations.
Enter the MOUNT commands in the following format:
source-drive is the name of
the drive holding the system disk
target-drive is the name of
the drive that will hold the backup files
Performing the System
Disk Backup When the system disk and output devices are mounted, back
up the system disk by entering the BACKUP command in the following
format:
$$$BACKUP/IMAGE/VERIFY source-drive:target-drive:
Example 1
In this example, the system disk and a target disk are mounted
so the BACKUP command can create a backup disk. (You can use a backup
disk as a system disk.)
Changing the CLUSTER_SIZE
Parameter The BACKUP command creates a system disk that includes a set
of volume parameters provided by HP, including a CLUSTER_SIZE (disk
access scheme) that is appropriate for your system. (The CLUSTER_SIZE refers
to the way files are stored on the disk, not to
cluster environments.) You can change most volume parameters later
with the SET VOLUME command.
Note that to change the CLUSTER_SIZE, you must back up the
system disk to a disk that has been previously initialized with
the CLUSTER_SIZE that you want. For more information about initializing
a disk and using the BACKUP command, refer to the HP OpenVMS System Manager's Manual, Volume 1: Essentials and
the HP OpenVMS System Management Utilities Reference Manual: A--L, and refer to the description of the INITIALIZE and
BACKUP commands in the HP OpenVMS DCL Dictionary.
Logout, Shutdown,
and Reboot After you complete the backup operation:
Enter the LOGOUT
command to exit the DCL environment and return to the menu.
Choose the shutdown option (8).
After the shutdown completes, boot from the system
disk.
HP OpenVMS Version 8.2 Upgrade and Installation... 
Backing Up and Restoring the System Disk
