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Tivoli Storage Manager for UNIX Backup-Archive Clients Installation and User's Guide
The Copy Serialization attribute determines whether a file can
be in use during a backup or archive, and what to do if it is. The
value for this attribute can be one of the following:
- Static. A file or directory must not be modified during
a backup or archive. If the object is changed during a backup or
archive attempt, it is not backed up or archived.
- Shared static. A file or directory must not be modified
during backup or archive. Tivoli Storage Manager attempts to perform a
backup or archive as many as four additional times, depending on the value
specified on the changingretries option in your client system
options (dsm.sys) file. If the object is changed during every
backup or archive attempt, it is not backed up or archived.
- Dynamic. A file or directory is backed up or archived on
the first attempt regardless of whether it changes during a backup or
archive.
- Shared dynamic. A file or directory is backed up or
archived regardless of whether it changes during a backup or archive.
Tivoli Storage Manager attempts to perform a back up or archive as many as
four additional times, depending on the value specified on the
changingretries option in your client system options file without
the file changing during the attempt. The file is backed up or archived
on the last try even if it has changed.
- Attention:
- Be careful when you select a management class containing a copy group that
specifies shared dynamic or dynamic for serialization backup.
If you select a management class that permits a file to be backed up or
archived while it is in use, the backup version or archived copy stored on the
server might be a fuzzy copy. A fuzzy copy is a backup
version or archived copy that does not accurately reflect what is currently in
the file. It might contain some, but not all, of the changes. If
that is not acceptable, select a management class that creates a backup
version or archive copy only if the file does not change during a backup or
archive.
If you restore or retrieve a file that contains a fuzzy copy, the file
might not be usable.
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