Technical data

Using BACKUP
11.4 Understanding the Backup Interfaces
11.4.1.1 Using Extended Character Sets
Beginning with OpenVMS Version 7.2, which introduces Extended File
Specifications, BACKUP can process file names that have extended character
sets. Included are the following formats:
• ODS-2 standard file name
• ISO Latin-1
• Unicode (UCS-2)
For additional information about extended character sets, refer to the OpenVMS
Guide to Extended File Specifications.
11.4.1.2 Specifying Input Files
For file-based BACKUP operations, you can specify relative input file versions,
for example:
$ BACKUP FILE.DAT;-2 SAVED_FILE.DAT
This example shows that you can choose the second-from-the-most-recent version
of the input file and assign it a different file name.
With BACKUP, you cannot use -0 as a relative file version to specify the earliest
version of the file. BACKUP processes -0 as if it were 0, saving the most recent
version of the file for processing.
11.4.2 The Backup Manager
Backup Manager is a screen-oriented interface to the OpenVMS Backup utility
(BACKUP) that presents BACKUP’s capabilities in an intuitive, task-oriented,
self-documenting manner. Backup Manager can ease backup tasks by guiding
you through the backup process. No real performance differences exist between
using the Backup Manager and using the BACKUP command line.
Backup Manager runs on:
• Any Compaq VTxxx-series video display terminal or equivalent terminal
emulator
• VMS VAX Version 5.4 or higher systems, and OpenVMS Alpha Version 1.5 or
higher systems
The Backup Manager interface is based on the OpenVMS Screen Management
Run-Time Library (RTL) routines.
11.4.2.1 Backup Manager Features
Backup Manager can perform the following backup operations:
• Save an entire volume to a save set
• Save selected files from a volume to a save set
• Restore an entire volume from a save set
• Restore selected files from a save set
• List a save set
Three types of online assistance are available with Backup Manager:
• Context-sensitive help
Press PF2 or the Help key to get help about the object at which the display
cursor is currently located.
11–6 Using BACKUP