Technical data

Using BACKUP
11.15 Backing Up User Disks
$ 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
date fields are not as recent as the last image backup or incremental
backup in which the /RECORD qualifier was used.
3. Enter the BACKUP command in the following format:
BACKUP/RECORD/SINCE=BACKUP input-specifier output-specifier/SAVE_SET
The /RECORD qualifier records the current date and time in the file header
record of each file that is backed up. The first step in an incremental backup
is an image backup (see Section 11.15.2). If you plan to perform incremental
backups, you must use the /RECORD qualifier when you perform image
backups. The /SINCE=BACKUP qualifier backs up files dated later than
the last /RECORD backup. The /SAVE_SET qualifier indicates that you are
creating a save set on a disk.
Examples
1. To create an incremental backup of a disk named DUA55: on a sequential
disk save set on a disk named DJC12:, you could enter the following
commands:
$ MOUNT DUA55: DISK1
%MOUNT-I-MOUNTED, DISK1 mounted on _DUA55:
$ MOUNT/FOREIGN DJC12:
%MOUNT-I-MOUNTED, DISK2 mounted on _DJC12:
$ BACKUP/RECORD/SINCE=BACKUP
_From: DUA55:[000000...]
_To: DJC12:USER1.SAV/SAVE_SET
Using BACKUP 11–37