In the Type of Backup section of the Work with Backup Template template screen, specify the following information:
Select one of the following types of backups:
CA VM:Backup backs up each minidisk or file space completely. This option is the default.
CA VM:Backup backs up only those minidisks or file spaces that have changed after a previous (full or incremental) backup. When you define an incremental backup job, specify whether to backup the entire minidisk or file space or only the changed portions. You must also enter the names of the job template files on which the incremental job is based.
If the backup type is incremental, you must set the detail level of the incremental backup job. Select one of the following detail levels:
CA VM:Backup backs up only those portions of the minidisk or file space that have changed since the previous backup. The following table describes what CA VM:Backup backs up depending on the type of domain being processed.
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Domain |
CA VM:Backup backs up each changed... |
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CMS minidisk |
File |
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CKD minidisk (count-key-data) |
Track |
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FBA minidisk (fixed-block- |
Group of blocks One group comprises 32 blocks of 512 bytes; a change to any block in a group causes the entire group to be backed up. |
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BFS file space |
File and its links, permissions, and ownership information |
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SFS file space |
File and its authorizations CA VM:Backup also backs up an alias if its name has changed or if the name of the base file to which it points has changed. |
A file-level base catalog is required to perform an incremental backup with file-level detail. If the base catalog was not created with file-level detail, CA VM:Backup backs up the entire minidisk or file space if any portion has changed. With only a domain-level catalog, CA VM:Backup has no base data against which file, track, or block changes can be compared.
CA VM:Backup backs up the entire minidisk or file space if any portion of the minidisk or file space has changed since the previous backup. This option is the default.
If the backup type is incremental, specify one or more base job template files in the Based On field. The base job template files identify the catalogs that CA VM:Backup is to use to determine what data to back up. When you list more than one job template file in the Based On field, CA VM:Backup bases the incremental backup on the most recently created catalog from any of the listed job template files.
In determining the data that needs to be backed up (files, tracks, or blocks), CA VM:Backup compares the current minidisk or file space against the most recent catalog. This comparison is made to determine whether any changes have occurred. For example, if you specify the job templates MONTHLY, WEEKLY, and DAILY in the Based On field, CA VM:Backup determines which of these three jobs was run most recently and bases the incremental job on the catalog created during this backup.
Enter the names of the job template files to be used as the base for the incremental backup. You can use pattern matching to specify similar job template file names. You can specify a maximum of 12 job template file names on this screen. If no catalogs exist for the specified base backup job template files, CA VM:Backup performs a full backup.
Note: To specify more than 12 base backup job template files, use the job template file BASE TEMPLATES record through TPI. Do not use the system administrator screens. For information about this record and about TPI, see the Template Programming Interface Guide.
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