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Tivoli Storage Manager for NetWare Backup-Archive Client Installation and User's Guide

Object References

Some NDS objects have attributes which are references to other objects. These object references are stored as full distinguished names. An example is an alias, which can reference a User or Group object.

During the restore of an object, the object being restored may reference an object that does not currently exist. In this case, a place-holder object is created to satisfy the object reference. These place-holders are eventually replaced by the real objects in the restore process.

During partial restores of the NDS, it is possible that the place-holder object is not specified for restore. In this case, the place-holder object will remain in the tree, appearing as an object of type unknown. These unknown objects can be handled by either deleting the unknown object or selectively restoring the real object.

Tivoli Storage Manager also treats place-holders as existing objects. As a result, we recommend that you specify the -replace=yes option during all NDS restorations, even if you are restoring the NDS from scratch.

In general, be careful with partial restores of the NDS. The current SMS architecture may not be robust enough to provide a partial restore, depending on the number and extent of object references in the NDS tree. The unknown" objects are created and left in the tree if referenced objects are not selected for the restore, or if you specify the -replace=no option during the restore.


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