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On most UNIX systems, only the root user can create a hard link to a directory. Some systems do not permit hard links, and many vendors recommend that these links be avoided. NetBackup does not back up and restore hard-linked directories in the same manner as files.
The differences are as follows:
During a backup, if NetBackup encounters hard-linked directories, the directories are backed up once for each hard link.
During a restore, NetBackup restores multiple copies of the hard-linked directory contents if the directories do not already exist on the disk. If the directories exist on disk, NetBackup restores the contents multiple times to the same disk location.
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