The cleanup utility does a cleanup of invalid entries in the shadow file.
NFS Gateway performance benefits when you use this utility. Consider the following guideline in determining when to use it:
Invalid entries can exist in the shadow file when the remote paths are not mounted as Gateway volumes, but they are directly accessible to UNIX users. In such cases, there is a possibility of certain files or directories being deleted without the knowledge of NetWare NFS Gateway. However, the entries corresponding to those files or directories continue to exist in the shadow file; these entries are invalid and should be deleted with the cleanup utility.
For details on using the cleanup utility, see Dismounting a Gateway Volume.