F.6 Alternative Backup and Restore Procedure (Minimum OpenVMS Environment)
This section describes an alternative method of
performing backup and restore operations. This method is similar
to creating a Standalone Backup directory on a disk, as supported
by OpenVMS VAX systems and certain earlier versions of OpenVMS Alpha
(using SYS$UPDATE.STABACKIT.COM). Supported
by both OpenVMS Alpha and Integrity server systems, this method installs a Minimum OpenVMS
Environment (install with no options) on another disk from which you
can perform your backup and restore operations on the system disk.
The Minimum OpenVMS Environment is created in the SYSE root ([SYSE])
on the disk, which runs a subset of OpenVMS and is indicated by the
triple dollar sign ($$$) system prompt. Use this method under the
following conditions:
If you do not have access
to the operating system media and its menu system
If you want to back up
a shadowed system disk without disabling the shadow set
NOTE: You can back up your running system disk by using
the /IGNORE=INTERLOCK qualifier with the BACKUP command and ignoring
warning messages. However, that method requires that all other use
of the system be suspended, including disabling logins, stopping print
and batch queues, and turning off networking software. In addition,
you cannot use this method to restore files to the running system
disk. Because of these limitations, HP recommends that, if you must
use an alternative backup or restore method, you use the method described
in this section.
F.6.1 Preparing an Alternate System Disk
Prepare an alternate system disk as follows:
Log
in to a privileged account on your running OpenVMS system.
Using
the SHOW DEVICE command, identify a data disk on which you can install
the operating system, with no options. This is your target disk during
that installation. To install the operating system with no options
on your target disk, you need the following amount of free disk space:
OpenVMS Alpha: approximately 5,21,552
blocks (267 MB)
OpenVMS Integrity servers:
approximately 10,09,762 blocks (517 MB)
Existing data remains on
the disk.
The
target disk must be mounted privately to your process. (This prevents
other users from accessing this disk during the installation and backup
procedures.) Therefore, if the target disk was mounted with the /SYSTEM,
/CLUSTER, /GROUP, or /SHARE qualifier, dismount that disk and mount
it without those qualifiers or the /FOREIGN qualifier. For example:
$ MOUNT/OVERRIDE=IDENTIFICATION DKA200
For OpenVMS Integrity servers, enter the following command:
(The procedure prompts you for a device name if
you do not specify it on the command line.)
As
the procedure completes the installation, the display is similar to
the following:
HP I64VMS OPENVMS V8.4: OpenVMS and related products platform
COPYRIGHT (c) ...
Hewlett-Packard Development Company, L.P.
Execution phase starting ...
The following product will be installed:
HP I64VMS VMS V8.4
Portion Done: 0%..10%..20%..30%..40%..50%..60%..70%..80%..90%..100%
The following product has been installed:
HP I64VMS VMS V8.4
.
.
.
The installation of minimum OpenVMS I64 is now complete.
Use EFI or the boot option you just created or validated (if any)
to boot minimum OpenVMS. If you use EFI remember to set VMS_FLAGS
to E,0 before booting, and to reset VMS_FLAGS to 0,0 (or as
required by your system).
BOOT -FLAGS E,O device-name
(Some configurations may require a boot option to boot.)
CAUTION: If your system is a cluster member, HP recommends
that you shut down the entire OpenVMS Cluster system before you back
up your system disk. This will prevent you from creating a partitioned
cluster and from jeopardizing the integrity of your data in any other
way.
F.6.2 Using the Alternate System Disk
Use the alternate system disk (on which you installed
the operating system with no options) to perform backup and restore
operations as follows:
Shut
down your system.
Boot
the alternate system disk from the SYSE root. For example, from an OpenVMS Alpha system, enter the following command:
>>> BOOT -FLAGS E,0 DKA 200
For OpenVMS Integrity server systems, you can
add the alternate system disk as a boot option in the EFI Boot Manager
menu by using the OpenVMS Integrity servers Boot Manager utility
(SYS$MANAGER:BOOT_OPTIONS.COM), as described in Section B.5.2. When prompted, set the flags as e,0.
Alternatively, boot the alternate system disk manually by entering
the following command at the EFI Shell prompt, where fsn: (such as fs1:) is the device associated with the
system disk:
Shell> fsn:\efi\vms\vms_loader.efi -flags e,0
The system automatically logs you in to the SYSTEM
account and then displays a triple dollar sign prompt ($$$).
NOTE: During the boot and login operations on this minimum
version of the operating system, you can ignore license messages that
are similar to the following:
%LICENSE-I-NOLICENSE, no license is active for this software product
If
your system disk is shadowed, install and load a Volume Shadowing
for OpenVMS license on this data disk. Then you can back up the shadowed
system disk from this data disk without disabling the shadow set.
NOTE: HP recommends that you do not install any other licenses, including OpenVMS licenses, on this
alternate system. You can use the system only from the console.
Mount
the system disk and any output devices you plan to use during the
backup or restore operations. See Section F.5.2 for more information.
Perform
the necessary backup or restore operations by entering the appropriate
BACKUP commands. For examples of using the BACKUP command to back
up the system disk, see Section F.4.3; for examples of using the BACKUP command
to restore the system disk, see Section F.5.3.
