Technical data

Using BACKUP
11.15 Backing Up User Disks
Examples
1. For example, if you want to create an image backup save set of the disk
named DUA1: on a disk named DUA2:, you could enter the following
commands:
$ MOUNT DUA1: USER1
%MOUNT-I-MOUNTED, USER1 mounted on _DUA1:
$ MOUNT DUA2: USER2
%MOUNT-I-MOUNTED, USER2 mounted on _DUA2:
$ BACKUP/IMAGE/RECORD
_From: DUA1:
_To: DUA2:[USER.BACKUPS]USER1.SAV/SAVE_SET
2. You can also specify multiple disk drives as the output specifier in the
BACKUP command line. For example:
$ BACKUP/IMAGE/RECORD
_From: DUA0:
_To: DUB24:[USER.BACKUPS]USER1.SAV,DUB25/SAVE_SET
11.15.4 Performing Incremental Backups to Tape
As described in Section 11.2, an incremental backup of a disk provides you with
an exact copy of only those files that have been created or modified since the last
image or incremental backup in which the /RECORD qualifier was used.
How to Perform This Task
To perform an incremental backup to tape, perform the following steps:
1. Perform an image backup using the /RECORD qualifier (see Section 11.15.2).
2. To determine the date of the last backup that used the /RECORD qualifier,
enter the DIRECTORY/FULL command and the file name. For example:
$ DIRECTORY/FULL LOGIN.COM
Directory WORK204:[HIGGINS]
LOGIN.COM;31 File ID: (23788,1,0)
Size: 7/9 Owner: [ACC,HIGGINS]
Created: 30-APR-2000 14:37:33.98
Revised: 30-APR-2000 14:37:34.44 (1)
Expires: <None specified>
Backup: 30-APR-2000 20:20:57.37
File organization: Sequential
File attributes: Allocation: 9, Extend: 0, Global buffer count: 0, No version limit
Record format: Variable length, maximum 94 bytes
Record attributes: Carriage return carriage control
RMS attributes: None
Journaling enabled: None
File protection: System:RWED, Owner:RWED, Group:RE, World:
Access Cntrl List: None
Total of 1 file, 7/9 blocks.
The date of the last /RECORD backup is indicated in the Backup field of the
display. In this example, a /RECORD backup was performed on 30-APR-2000
20:20:57.37.
Note
If you used the /IGNORE=INTERLOCK qualifier to back up open files
during your last image backup or incremental backup in which the
/RECORD qualifier was used, see Section 11.18.3. If the files remain open,
they will not be included in the incremental backup because their backup
Using BACKUP 11–35